IDX_NIL           110 3rdparty/libwebp/mux/muxedit.c   assert(idx != IDX_NIL);
IDX_NIL            75 3rdparty/libwebp/mux/muxinternal.c   return IDX_NIL;
IDX_NIL            93 3rdparty/libwebp/mux/muxinternal.c   return (idx == IDX_NIL) ? IDX_UNKNOWN : idx;
IDX_NIL           447 3rdparty/libwebp/mux/muxread.c   return IDX_NIL;