!16041 fix parallel pass

From: @zoloft
Reviewed-by: @hangangqiang,@wangchengyuan
Signed-off-by: @hangangqiang

mindspore/lite/tools/converter/converter_flags.h

@@ -77,7 +77,7 @@ class Flags : public virtual mindspore::lite::FlagParser {
   int quantWeightSize;
   std::string bitNumIn;
   int bitNum;
-  int parallelMode;
+  int parallelMode = 0;
   std::string configFile;
   std::string quantWeightChannelStr;
   int quantWeightChannel;