darwin: Build create_context.c

Fixes a build regression from: 588042a8ec

Signed-off-by: Jeremy Huddleston <jeremyhu@apple.com>

src/glx/apple/Makefile

@@ -35,6 +35,7 @@ SOURCES = \
 	apple_xgl_api_stereo.c \
 	apple_xgl_api_viewport.c \
 	appledri.c \
+	../create_context.c \
 	../clientattrib.c \
 	../compsize.c \
 	../glxconfig.c \

src/glx/create_context.c

@@ -80,8 +80,13 @@ glXCreateContextAttribsARB(Display *dpy, GLXFBConfig config,
 					       &dummy_err);
    }
 
-   if (gc == NULL)
+   if (gc == NULL) {
+#ifdef GLX_USE_APPLEGL
+      gc = applegl_create_context(psc, cfg, share, 0);
+#else
       gc = indirect_create_context(psc, cfg, share, 0);
+#endif
+   }
 
    gc->xid = xcb_generate_id(c);
    gc->share_xid = (share != NULL) ? share->xid : 0;