message: [ios] Fix missprint in callbacks helper.
diff: @@ -355,7 +355,7 @@ void IndyWrapperCommon5PSDataCallback(indy_handle_t xcommand_handle,
  NSString *sarg1 = nil;
  if (arg1)
  {
  - [NSString stringWithUTF8String:arg1];
  + sarg1 = [NSString stringWithUTF8String:arg1];
  }
  NSData* sarg2 = [NSData dataWithBytes:arg2 length:arg3];
  