[clang-tools-extra] [clang-tidy] Add check readability-return-expression-in-void-function (PR #76249)

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``````````bash
git-clang-format --diff 5f254eb05566f5b400a212ae77117a9efd9019a1 579cfd2eec9932aff10bf258811ec772a3503ce0 -- clang-tools-extra/clang-tidy/readability/ReturnExpressionInVoidFunctionCheck.cpp clang-tools-extra/clang-tidy/readability/ReturnExpressionInVoidFunctionCheck.h clang-tools-extra/test/clang-tidy/checkers/readability/return-expression-in-void-function.cpp clang-tools-extra/clang-tidy/readability/ReadabilityTidyModule.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/clang-tools-extra/clang-tidy/readability/ReturnExpressionInVoidFunctionCheck.cpp b/clang-tools-extra/clang-tidy/readability/ReturnExpressionInVoidFunctionCheck.cpp
index fb6073b60b..2308d0782a 100644
--- a/clang-tools-extra/clang-tidy/readability/ReturnExpressionInVoidFunctionCheck.cpp
+++ b/clang-tools-extra/clang-tidy/readability/ReturnExpressionInVoidFunctionCheck.cpp
@@ -15,11 +15,15 @@ using namespace clang::ast_matchers;
 
 namespace clang::tidy::readability {
 
-void ReturnExpressionInVoidFunctionCheck::registerMatchers(MatchFinder *Finder) {
-  Finder->addMatcher(returnStmt(hasReturnValue(hasType(voidType()))).bind("void_return"), this);
+void ReturnExpressionInVoidFunctionCheck::registerMatchers(
+    MatchFinder *Finder) {
+  Finder->addMatcher(
+      returnStmt(hasReturnValue(hasType(voidType()))).bind("void_return"),
+      this);
 }
 
-void ReturnExpressionInVoidFunctionCheck::check(const MatchFinder::MatchResult &Result) {
+void ReturnExpressionInVoidFunctionCheck::check(
+    const MatchFinder::MatchResult &Result) {
   const auto *VoidReturn = Result.Nodes.getNodeAs<ReturnStmt>("void_return");
   diag(VoidReturn->getBeginLoc(), "return statements should not return void");
 }

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https://github.com/llvm/llvm-project/pull/76249