style fixes for SDL_PROC macros.

test/testgles2.c

@@ -28,7 +28,7 @@
 
 typedef struct GLES2_Context
 {
-#define SDL_PROC(ret, func, params) ret(APIENTRY *func) params;
+#define SDL_PROC(ret, func, params) ret (APIENTRY *func) params;
 #include "../src/render/opengles2/SDL_gles2funcs.h"
 #undef SDL_PROC
 } GLES2_Context;