use auto for obvious type; NFC

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@256393 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/CoverageMappingGen.cpp b/lib/CodeGen/CoverageMappingGen.cpp
index 2486a496a285ca13e12fb58447682fcbdd4a83cb..eb6edeac4427452b26501dd50e0688f5de458c64 100644 (file)
--- a/lib/CodeGen/CoverageMappingGen.cpp
+++ b/lib/CodeGen/CoverageMappingGen.cpp
@@ -785,7 +785,7 @@ struct CounterCoverageMappingBuilder
     else
       pushRegion(Count, getStart(S));
 
-    if (const CaseStmt *CS = dyn_cast<CaseStmt>(S)) {
+    if (const auto *CS = dyn_cast<CaseStmt>(S)) {
       Visit(CS->getLHS());
       if (const Expr *RHS = CS->getRHS())
         Visit(RHS);