Revert r147664; it's breaking clang regression tests.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@147681 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGExprComplex.cpp b/lib/CodeGen/CGExprComplex.cpp
index 982044e..d58db67 100644
--- a/lib/CodeGen/CGExprComplex.cpp
+++ b/lib/CodeGen/CGExprComplex.cpp
@@ -680,7 +680,7 @@
   llvm::BasicBlock *ContBlock = CGF.createBasicBlock("cond.end");
 
   // Bind the common expression if necessary.
-  CodeGenFunction::OpaqueValueMapping(CGF, E);
+  CodeGenFunction::OpaqueValueMapping binding(CGF, E);
 
   CodeGenFunction::ConditionalEvaluation eval(CGF);
   CGF.EmitBranchOnBoolExpr(E->getCond(), LHSBlock, RHSBlock);