Fix compiler warnings in the tests.

I didn't have CWARNFLAGS in the Makefile.am, so lots of things that
would generate warnings had crept in.

test/egl_common.c

@@ -23,6 +23,7 @@
 
 #include <err.h>
 #include <epoxy/egl.h>
+#include "egl_common.h"
 
 /**
  * Do whatever it takes to get us an EGL display for the system.
@@ -34,15 +35,17 @@ get_egl_display_or_skip(void)
 {
     Display *dpy = XOpenDisplay(NULL);
     EGLint major, minor;
+    EGLDisplay *edpy;
+    bool ok;
 
     if (!dpy)
         errx(77, "couldn't open display\n");
 
-    EGLDisplay *edpy = eglGetDisplay(dpy);
+    edpy = eglGetDisplay(dpy);
     if (!edpy)
         errx(1, "Couldn't get EGL display for X11 Display.\n");
 
-    bool ok = eglInitialize(edpy, &major, &minor);
+    ok = eglInitialize(edpy, &major, &minor);
     if (!ok)
         errx(1, "eglInitialize() failed\n");
 

test/glx_common.c

@@ -24,7 +24,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <X11/Xlib.h>
-#include "epoxy/glx.h"
+#include "glx_common.h"
 
 Display *
 get_display_or_skip(void)

test/glx_common.h

@@ -26,7 +26,7 @@
 Display *
 get_display_or_skip(void);
 
-GLXContext
+void
 make_glx_context_current_or_skip(Display *dpy);
 
 GLXFBConfig

test/glx_glxgetprocaddress_nocontext.c

@@ -43,12 +43,13 @@ int
 main(int argc, char **argv)
 {
     bool pass = true;
+    void *func;
 
     dpy = get_display_or_skip();
     if (epoxy_glx_version(dpy, 0) < 14)
         errx(77, "GLX version 1.4 required for glXGetProcAddress().\n");
 
-    void *func = glXGetProcAddress((const GLubyte *)"glGetString");
+    func = glXGetProcAddress((const GLubyte *)"glGetString");
     if (!func)
         errx(1, "glXGetProcAddress() returned NULL\n");
 

test/glx_public_api_core.c

@@ -134,15 +134,9 @@ int
 main(int argc, char **argv)
 {
     bool pass = true;
-
-    dpy = get_display_or_skip();
-
-    if (!epoxy_has_glx_extension(dpy, 0, "GLX_ARB_create_context_profile"))
-        errx(77, "Test requires GLX_ARB_create_context_profile");
-
-    XVisualInfo *visinfo = get_glx_visual(dpy);
-    Window win = get_glx_window(dpy, visinfo, false);
-    GLXFBConfig config = get_fbconfig_for_visinfo(dpy, visinfo);
+    XVisualInfo *visinfo;
+    Window win;
+    GLXFBConfig config;
     static const int attribs[] = {
         GLX_CONTEXT_PROFILE_MASK_ARB,
         GLX_CONTEXT_CORE_PROFILE_BIT_ARB,
@@ -152,8 +146,17 @@ main(int argc, char **argv)
         2,
         None
     };
-    GLXContext ctx = glXCreateContextAttribsARB(dpy, config, NULL, True,
-                                                attribs);
+    GLXContext ctx;
+
+    dpy = get_display_or_skip();
+
+    if (!epoxy_has_glx_extension(dpy, 0, "GLX_ARB_create_context_profile"))
+        errx(77, "Test requires GLX_ARB_create_context_profile");
+
+    visinfo = get_glx_visual(dpy);
+    win = get_glx_window(dpy, visinfo, false);
+    config = get_fbconfig_for_visinfo(dpy, visinfo);
+    ctx = glXCreateContextAttribsARB(dpy, config, NULL, True, attribs);
     if (ctx == None)
         errx(77, "glXCreateContext failed");