[llvm] [SandboxVec][DAG] Mark UnscheduledSuccs as invalid when vectorized (PR #185519)

[Jan Patrick Lehr via llvm-commits]

================
@@ -260,7 +260,7 @@ void DependencyGraph::setDefUseUnscheduledSuccs(
       auto *OpN = getNode(OpI);
       if (OpN == nullptr)
         continue;
-      ++OpN->UnscheduledSuccs;
+      ++*OpN->UnscheduledSuccs;
----------------
jplehr wrote:

This also and more below?
```suggestion
      OpN->incrUnscheduledSuccs();
```

https://github.com/llvm/llvm-project/pull/185519