Fix MSVC compiler error: "initialization of 'VD' is skipped by 'case' label"

llvm-svn: 49853
diff --git a/clang/lib/Analysis/UninitializedValues.cpp b/clang/lib/Analysis/UninitializedValues.cpp
index 8f0bdfd..15c11ba 100644
--- a/clang/lib/Analysis/UninitializedValues.cpp
+++ b/clang/lib/Analysis/UninitializedValues.cpp
@@ -164,11 +164,12 @@
 
 bool TransferFuncs::VisitUnaryOperator(UnaryOperator* U) {
   switch (U->getOpcode()) {
-    case UnaryOperator::AddrOf:
+    case UnaryOperator::AddrOf: {
       VarDecl* VD = FindBlockVarDecl(U->getSubExpr());
       if (VD && VD->isBlockVarDecl())
         return V(VD,AD) = Initialized;
       break;
+    }
     
     case UnaryOperator::SizeOf:
       return Initialized;