gallium/aux/tgsi/tgsi_build.c: Fix warnings

/tgsi_build.c: In function 'tgsi_build_full_immediate':
tgsi_build.c:599:18: warning: comparison between signed and unsigned
integer expressions [-Wsign-compare]
    for( i = 0; i < full_imm->Immediate.NrTokens - 1; i++ ) {
                  ^
tgsi_build.c: In function 'tgsi_build_instruction_label':
tgsi_build.c:689:24: warning: unused parameter 'prev_token' [-Wunused-
parameter]
    struct tgsi_token  *prev_token,
                        ^~~~~~~~~~
tgsi_build.c: In function 'tgsi_build_instruction_texture':
tgsi_build.c:720:23: warning: unused parameter 'prev_token' [-Wunused-
parameter]
    struct tgsi_token *prev_token,
                       ^~~~~~~~~~
tgsi_build.c: In function 'tgsi_build_texture_offset':
tgsi_build.c:755:23: warning: unused parameter 'prev_token' [-Wunused-
parameter]
    struct tgsi_token *prev_token,
                       ^~~~~~~~~~
tgsi_build.c: In function 'tgsi_build_full_property':
tgsi_build.c:1307:18: warning: comparison between signed and unsigned
integer expressions [-Wsign-compare]
    for( i = 0; i < full_prop->Property.NrTokens - 1; i++ ) {

v2: remove the unused prev_token (in sync with mesa)

Reviewed-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Signed-off-by: Gert Wollny <gert.wollny@collabora.com>
Signed-off-by: Jakob Bornecrantz <jakob@collabora.com>

src/gallium/auxiliary/tgsi/tgsi_build.c

@@ -596,7 +596,8 @@ tgsi_build_full_immediate(
    struct tgsi_header *header,
    unsigned maxsize )
 {
-   unsigned size = 0, i;
+   unsigned size = 0;
+   int i;
    struct tgsi_immediate *immediate;
 
    if( maxsize <= size )
@@ -700,7 +701,6 @@ tgsi_default_instruction_label( void )
 static struct tgsi_instruction_label
 tgsi_build_instruction_label(
    unsigned label,
-   struct tgsi_token  *prev_token,
    struct tgsi_instruction *instruction,
    struct tgsi_header *header )
 {
@@ -731,7 +731,6 @@ static struct tgsi_instruction_texture
 tgsi_build_instruction_texture(
    unsigned texture,
    unsigned num_offsets,
-   struct tgsi_token *prev_token,
    struct tgsi_instruction *instruction,
    struct tgsi_header *header )
 {
@@ -765,7 +764,6 @@ tgsi_build_instruction_memory(
    unsigned qualifier,
    unsigned texture,
    unsigned format,
-   struct tgsi_token *prev_token,
    struct tgsi_instruction *instruction,
    struct tgsi_header *header )
 {
@@ -800,7 +798,6 @@ tgsi_default_texture_offset( void )
 static struct tgsi_texture_offset
 tgsi_build_texture_offset(
    int index, int file, int swizzle_x, int swizzle_y, int swizzle_z,
-   struct tgsi_token *prev_token,
    struct tgsi_instruction *instruction,
    struct tgsi_header *header )
 {
@@ -1050,7 +1047,6 @@ tgsi_build_full_instruction(
    unsigned size = 0;
    unsigned i;
    struct tgsi_instruction *instruction;
-   struct tgsi_token *prev_token;
 
    if( maxsize <= size )
       return 0;
@@ -1063,7 +1059,6 @@ tgsi_build_full_instruction(
                                          full_inst->Instruction.NumDstRegs,
                                          full_inst->Instruction.NumSrcRegs,
                                          header);
-   prev_token = (struct tgsi_token  *) instruction;
 
    if (full_inst->Instruction.Label) {
       struct tgsi_instruction_label *instruction_label;
@@ -1076,10 +1071,8 @@ tgsi_build_full_instruction(
 
       *instruction_label = tgsi_build_instruction_label(
          full_inst->Label.Label,
-         prev_token,
          instruction,
          header );
-      prev_token = (struct tgsi_token  *) instruction_label;
    }
 
    if (full_inst->Instruction.Texture) {
@@ -1093,11 +1086,9 @@ tgsi_build_full_instruction(
 
       *instruction_texture = tgsi_build_instruction_texture(
          full_inst->Texture.Texture,
-	 full_inst->Texture.NumOffsets,
-         prev_token,
+	      full_inst->Texture.NumOffsets,
          instruction,
          header   );
-      prev_token = (struct tgsi_token  *) instruction_texture;
 
       for (i = 0; i < full_inst->Texture.NumOffsets; i++) {
          struct tgsi_texture_offset *texture_offset;
@@ -1112,10 +1103,8 @@ tgsi_build_full_instruction(
             full_inst->TexOffsets[i].SwizzleX,
             full_inst->TexOffsets[i].SwizzleY,
             full_inst->TexOffsets[i].SwizzleZ,
-            prev_token,
             instruction,
             header);
-         prev_token = (struct tgsi_token *) texture_offset;
       }
    }
 
@@ -1132,10 +1121,8 @@ tgsi_build_full_instruction(
          full_inst->Memory.Qualifier,
          full_inst->Memory.Texture,
          full_inst->Memory.Format,
-         prev_token,
          instruction,
          header );
-      prev_token = (struct tgsi_token  *) instruction_memory;
    }
 
    for( i = 0;  i <   full_inst->Instruction.NumDstRegs; i++ ) {
@@ -1360,7 +1347,8 @@ tgsi_build_full_property(
    struct tgsi_header *header,
    unsigned maxsize )
 {
-   unsigned size = 0, i;
+   unsigned size = 0;
+   int i;
    struct tgsi_property *property;
 
    if( maxsize <= size )