[clang] [clang] Fix code completion crash in lambda trailing requires-clause (PR #206373)

[Aaron Ballman via cfe-commits]

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@@ -2625,9 +2625,11 @@ AddOrdinaryNameResults(SemaCodeCompletion::ParserCompletionContext CCC,
 
     // "return expression ;" or "return ;", depending on the return type.
     QualType ReturnType;
-    if (const auto *Function = dyn_cast<FunctionDecl>(SemaRef.CurContext))
-      ReturnType = Function->getReturnType();
-    else if (const auto *Method = dyn_cast<ObjCMethodDecl>(SemaRef.CurContext))
+    if (const auto *Function = dyn_cast<FunctionDecl>(SemaRef.CurContext)) {
+      if (!Function->getType().isNull())
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AaronBallman wrote:

Thank you for checking!

https://github.com/llvm/llvm-project/pull/206373