Bugfix FuseHPVMTensorNodes: Added NULL check in findNextNodeInSequence

hpvm/lib/Transforms/FuseHPVMTensorNodes/FuseHPVMTensorNodes.cpp

@@ -129,6 +129,9 @@ static DFNode *findNextNodeInSequence(DFNode *SrcN) {
     }
   }
 
+  if(!DstN)
+      return NULL;
+
   // If we reach this point, DstN is the unique successor of SrcN
 
   // Now, test that the DstN has a single predeccessor except Root (dummy)