fix a bug of memory leak

source/sample/transformer/T2TTrainer.cpp

@@ -923,6 +923,7 @@ int T2TTrainer::LoadBatchMT(FILE * file,
 
 
     delete[] paddingEncOffsets;
     delete[] paddingEncOffsets;
     delete[] paddingDecOffsets;
     delete[] paddingDecOffsets;
+    delete[] goldOffsets;
 
 
     return sc;
     return sc;
 }
 }