[ubsan] Fix HeapObjectMatcher to avoid invalid casts.

src/compiler/node-matchers.h

Index: src/compiler/node-matchers.h
diff --git a/src/compiler/node-matchers.h b/src/compiler/node-matchers.h
index d6e8c6943c07c22ad2f6bb8d49d329bb99c9bbaa..d543425fca48606a0947291dc13bda6ecaa1c9cd 100644
--- a/src/compiler/node-matchers.h
+++ b/src/compiler/node-matchers.h
@@ -152,11 +152,10 @@ typedef FloatMatcher<double, IrOpcode::kNumberConstant> NumberMatcher;
 
 
 // A pattern matcher for heap object constants.
-template <typename T>
 struct HeapObjectMatcher final
-    : public ValueMatcher<Unique<T>, IrOpcode::kHeapConstant> {
+    : public ValueMatcher<Unique<HeapObject>, IrOpcode::kHeapConstant> {
   explicit HeapObjectMatcher(Node* node)
-      : ValueMatcher<Unique<T>, IrOpcode::kHeapConstant>(node) {}
+      : ValueMatcher<Unique<HeapObject>, IrOpcode::kHeapConstant>(node) {}
 };