[clang] [clang] Fix RecursiveASTVisitor to traverse the exception parameter in ObjCAtCatchStmt. (PR #216125)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions h,cpp -- clang/include/clang/AST/RecursiveASTVisitor.h clang/unittests/Tooling/RecursiveASTVisitorTestDeclVisitor.cpp --diff_from_common_commit
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View the diff from clang-format here.
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``````````diff
diff --git a/clang/unittests/Tooling/RecursiveASTVisitorTestDeclVisitor.cpp b/clang/unittests/Tooling/RecursiveASTVisitorTestDeclVisitor.cpp
index 2af0ecb40..fe842431d 100644
--- a/clang/unittests/Tooling/RecursiveASTVisitorTestDeclVisitor.cpp
+++ b/clang/unittests/Tooling/RecursiveASTVisitorTestDeclVisitor.cpp
@@ -137,10 +137,9 @@ TEST(RecursiveASTVisitor, NoRecursionInSelfFriend) {
 TEST(RecursiveASTVisitor, VisitsObjCAtCatchStmtExceptionVariable) {
   VarDeclVisitor Visitor;
   Visitor.ExpectMatch("e", 2, 28);
-  EXPECT_TRUE(Visitor.runOver(
-    "@interface NSException; @end\n"
-    "void f() { @try {} @catch (NSException *e) {} }",
-    VarDeclVisitor::Lang_OBJC));
+  EXPECT_TRUE(Visitor.runOver("@interface NSException; @end\n"
+                              "void f() { @try {} @catch (NSException *e) {} }",
+                              VarDeclVisitor::Lang_OBJC));
 }
 
 } // end anonymous namespace

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https://github.com/llvm/llvm-project/pull/216125