[clang] Fix the assertion failure in Analysis/Checkers/WebKit/forward-decl-checker.mm after https://github.com/llvm/llvm-project/pull/132784. (PR #133341)

[via cfe-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-clang

Author: Ryosuke Niwa (rniwa)

<details>
<summary>Changes</summary>



---
Full diff: https://github.com/llvm/llvm-project/pull/133341.diff


1 Files Affected:

- (modified) clang/lib/StaticAnalyzer/Checkers/WebKit/ForwardDeclChecker.cpp (+2-1) 


``````````diff
diff --git a/clang/lib/StaticAnalyzer/Checkers/WebKit/ForwardDeclChecker.cpp b/clang/lib/StaticAnalyzer/Checkers/WebKit/ForwardDeclChecker.cpp
index 291eb140d3202..a524593b0119b 100644
--- a/clang/lib/StaticAnalyzer/Checkers/WebKit/ForwardDeclChecker.cpp
+++ b/clang/lib/StaticAnalyzer/Checkers/WebKit/ForwardDeclChecker.cpp
@@ -231,7 +231,8 @@ class ForwardDeclChecker : public Checker<check::ASTDecl<TranslationUnitDecl>> {
     if (BR->getSourceManager().isInSystemHeader(E->getExprLoc()))
       return;
 
-    if (auto *Receiver = E->getInstanceReceiver()->IgnoreParenCasts()) {
+    if (auto *Receiver = E->getInstanceReceiver()) {
+      Receiver = Receiver->IgnoreParenCasts();
       if (isUnknownType(E->getReceiverType()))
         reportUnknownRecieverType(Receiver, DeclWithIssue);
     }

``````````

</details>


https://github.com/llvm/llvm-project/pull/133341