Bugfix: avoid overwriting OFMsg base type_ member.
Bugfix: avoid overwriting OFMsg base type_ member.

Avoid overwriting OFMsg base type_ member with group_type value.

ARCCN/libfluid_msg,OpenNetworkingFoundation/libfluid_msg,OpenNetworkingFoundation/libfluid_msg,ARCCN/libfluid_msg,ARCCN/libfluid_msg,OpenNetworkingFoundation/libfluid_msg