[clang] [analyzer] Fix stores through label locations (PR #89265)

[Balazs Benics via cfe-commits]

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@@ -2358,11 +2358,12 @@ StoreRef RegionStoreManager::killBinding(Store ST, Loc L) {
 
 RegionBindingsRef
 RegionStoreManager::bind(RegionBindingsConstRef B, Loc L, SVal V) {
-  if (L.getAs<loc::ConcreteInt>())
+  // We only care about region locations.
+  auto MemRegVal = L.getAs<loc::MemRegionVal>();
+  if (!MemRegVal.has_value())
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steakhal wrote:

```suggestion
  if (!MemRegVal)
```

https://github.com/llvm/llvm-project/pull/89265