graphics/glew-wayland: unbreak on GCC architectures

In file included from src/glew.c:43:
include/GL/eglew.h:115: error: redefinition of typedef 'EGLint'
/usr/local/include/EGL/eglplatform.h:158: error: previous declaration of 'EGLint' was here

$ gcc42 -xc -c -
typedef int foo;
typedef int foo;
^D
<stdin>:2: error: redefinition of typedef 'foo'
<stdin>:1: error: previous declaration of 'foo' was here

PR: 242310
Reported by: pkubaj