Resolve unused variable 'VR' warning in RetainCountChecker.cpp

Getting rid of
  error: unused variable 'VR' [-Werror,-Wunused-variable]
warning/error at
  lib/StaticAnalyzer/Checkers/RetainCountChecker.cpp:1933

llvm-svn: 327802

1 files changed, 1 insertions, 1 deletions

diff --git a/clang/lib/StaticAnalyzer/Checkers/RetainCountChecker.cpp b/clang/lib/StaticAnalyzer/Checkers/RetainCountChecker.cpp
index a8917979473..98d5fcfb9c1 100644
--- a/clang/lib/StaticAnalyzer/Checkers/RetainCountChecker.cpp
+++ b/clang/lib/StaticAnalyzer/Checkers/RetainCountChecker.cpp
@@ -1931,7 +1931,7 @@ static bool isNumericLiteralExpression(const Expr *E) {
 
 static Optional<std::string> describeRegion(const MemRegion *MR) {
   if (const auto *VR = dyn_cast_or_null<VarRegion>(MR))
-    return std::string(cast<VarRegion>(MR)->getDecl()->getName());
+    return std::string(VR->getDecl()->getName());
   // Once we support more storage locations for bindings,
   // this would need to be improved.
   return None;