Compile fix for non-Linux systems

panda/src/vision/config_vision.cxx

@@ -46,8 +46,10 @@ init_libvision() {
   initialized = true;
 
   WebcamVideo::init_type();
+#ifdef IS_LINUX
   WebcamVideoCursorV4L::init_type();
   WebcamVideoV4L::init_type();
+#endif
 
 #ifdef HAVE_OPENCV
   OpenCVTexture::init_type();