[C++] Fix memory leak when using grpc (#6896) (#6897)

2021-10-18 11:24:52 -07:00
parent 9a4ca2764c
commit e672dabfea
1 changed files with 2 additions and 0 deletions
--- a/include/flatbuffers/grpc.h
+++ b/include/flatbuffers/grpc.h
@@ -276,10 +276,12 @@ template<class T> class SerializationTraits<flatbuffers::grpc::Message<T>> {
    Slice slice;
    if (!buf->TrySingleSlice(&slice).ok()) {
      if (!buf->DumpToSingleSlice(&slice).ok()) {
+        buf->Clear();
        return ::grpc::Status(::grpc::StatusCode::INTERNAL, "No payload");
      }
    }
    *msg = flatbuffers::grpc::Message<T>(slice);
+    buf->Clear();
 #if FLATBUFFERS_GRPC_DISABLE_AUTO_VERIFICATION
    return ::grpc::Status::OK;
 #else