Allow OpenGL ES header inclusion on macOS

Related to #985.

include/GLFW/glfw3.h

@@ -139,25 +139,7 @@ extern "C" {
 
 /* Include the chosen client API headers.
  */
-#if defined(__APPLE__)
- #if defined(GLFW_INCLUDE_GLCOREARB)
-  #include <OpenGL/gl3.h>
-  #if defined(GLFW_INCLUDE_GLEXT)
-   #include <OpenGL/gl3ext.h>
-  #endif
- #elif !defined(GLFW_INCLUDE_NONE)
-  #if !defined(GLFW_INCLUDE_GLEXT)
-   #define GL_GLEXT_LEGACY
-  #endif
-  #include <OpenGL/gl.h>
- #endif
- #if defined(GLFW_INCLUDE_GLU)
-  #include <OpenGL/glu.h>
- #endif
-#else
- #if defined(GLFW_INCLUDE_GLCOREARB)
-  #include <GL/glcorearb.h>
- #elif defined(GLFW_INCLUDE_ES1)
+#if defined(GLFW_INCLUDE_ES1)
  #include <GLES/gl.h>
  #if defined(GLFW_INCLUDE_GLEXT)
   #include <GLES/glext.h>
@@ -182,6 +164,24 @@ extern "C" {
  #if defined(GLFW_INCLUDE_GLEXT)
   #include <GLES2/gl2ext.h>
  #endif
+#elif defined(__APPLE__)
+ #if defined(GLFW_INCLUDE_GLCOREARB)
+  #include <OpenGL/gl3.h>
+  #if defined(GLFW_INCLUDE_GLEXT)
+   #include <OpenGL/gl3ext.h>
+  #endif
+ #elif !defined(GLFW_INCLUDE_NONE)
+  #if !defined(GLFW_INCLUDE_GLEXT)
+   #define GL_GLEXT_LEGACY
+  #endif
+  #include <OpenGL/gl.h>
+ #endif
+ #if defined(GLFW_INCLUDE_GLU)
+  #include <OpenGL/glu.h>
+ #endif
+#else
+ #if defined(GLFW_INCLUDE_GLCOREARB)
+  #include <GL/glcorearb.h>
  #elif !defined(GLFW_INCLUDE_NONE)
   #include <GL/gl.h>
   #if defined(GLFW_INCLUDE_GLEXT)