Merge branch 'mysql-5.6-cluster-7.4' into mysql-5.7-cluster-7.5

Change-Id: Ia159be3b3acc04e3b02ec8f3492ff30245f348ed

Author: VarunNagaraju

storage/ndb/src/kernel/blocks/qmgr/QmgrMain.cpp

@@ -1446,6 +1446,8 @@ void Qmgr::execCM_REGREF(Signal* signal)
 
   CmRegRef* ref = (CmRegRef*)signal->getDataPtr();
   UintR TaddNodeno = ref->nodeId;
+  ndbrequire(TaddNodeno < MAX_NDB_NODES);
+
   UintR TrefuseReason = ref->errorCode;
   Uint32 candidate = ref->presidentCandidate;
   Uint32 node_gci = 1;