[clang] [analyzer] Fix a false memory leak reports involving placement new (PR #144341)

[Pavel Skripkin via cfe-commits]

================
@@ -1371,6 +1371,19 @@ void MallocChecker::checkIfFreeNameIndex(ProgramStateRef State,
   C.addTransition(State);
 }
 
+const Expr *getPlacementNewBufferArg(const CallExpr *CE,
+                                     const FunctionDecl *FD) {
+  // Checking for signature:
+  // void* operator new  ( std::size_t count, void* ptr );
+  // void* operator new[]( std::size_t count, void* ptr );
+  if (CE->getNumArgs() != 2)
----------------
pskrgag wrote:

What about (weird) overload like like 

```
void operator delete(void*, void *);
```

Likely bind on 1405 won't hurt, since `operator delete` should return void. I guess it's better to check that `FD->getOverloadedOperator() == OO_new`

https://github.com/llvm/llvm-project/pull/144341