sdlStrrchr function
extern DECLSPEC char *SDLCALL SDL_strrchr(const char *str, int c)
Implementation
Pointer<Int8> sdlStrrchr(String? str, int c) {
  final sdlStrrchrLookupFunction = libSdl2.lookupFunction<
      Pointer<Int8> Function(Pointer<Utf8> str, Int32 c),
      Pointer<Int8> Function(Pointer<Utf8> str, int c)>('SDL_strrchr');
  final strPointer = str != null ? str.toNativeUtf8() : nullptr;
  final result = sdlStrrchrLookupFunction(strPointer, c);
  calloc.free(strPointer);
  return result;
}