[clang] [WebKit Checkers] Trivial analysis should check destructors of function parameters and local variables (PR #181576)

[Ryosuke Niwa via cfe-commits]

================
@@ -516,19 +516,35 @@ class TrivialFunctionAnalysisVisitor
     return Result;
   }
 
+  bool CanTriviallyDestruct(const Type *T) {
+    if (T->isIntegralOrEnumerationType())
+      return true;
+    if (isa<PointerType>(T) || T->isNullPtrType())
----------------
rniwa wrote:

Yeah, there were cases where a function took `nullptr_t` as an argument...

https://github.com/llvm/llvm-project/pull/181576
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