Merge pull request #207 from xiaofeng11/v3_chipmunk

Set get_cpCollisionHandlerDoNothing function win32 only

Author: zilongshanren

chipmunk/include/chipmunk/chipmunk_private.h

@@ -695,7 +695,9 @@ struct cpSpace {
 void cpSpaceSetStaticBody(cpSpace *space, cpBody *body);
 
 extern cpCollisionHandler cpCollisionHandlerDoNothing;
+#if defined(_WINDOWS) && (defined(_WIN32) || defined(WIN32))
 CP_EXPORT cpCollisionHandler * get_cpCollisionHandlerDoNothing();
+#endif
 
 void cpSpaceProcessComponents(cpSpace *space, cpFloat dt);