shader: Use swizzle_writer in get_source_info

Signed-off-by: Akihiko Odaki <akihiko.odaki@gmail.com>
Reviewed-by: Gert Wollny <gert.wollny@collabora.com>

src/vrend_shader.c

@@ -4147,8 +4147,6 @@ get_source_info(struct dump_ctx *ctx,
 
       sinfo->override_no_wm[i] = false;
       sinfo->override_no_cast[i] = false;
-      if (isfloatabsolute)
-         swizzle[swz_idx++] = ')';
 
       if (src->Register.Negate)
          prefix[pre_idx++] = '-';
@@ -4172,6 +4170,9 @@ get_source_info(struct dump_ctx *ctx,
          swizzle_writer = src_swizzle0;
       }
 
+      if (isfloatabsolute)
+         swizzle_writer[swz_idx++] = ')';
+
       usage_mask |= 1 << src->Register.SwizzleX;
       usage_mask |= 1 << src->Register.SwizzleY;
       usage_mask |= 1 << src->Register.SwizzleZ;