Restore sanity to 131601.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131603 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/ExecutionEngine/MCJIT/MCJIT.cpp b/lib/ExecutionEngine/MCJIT/MCJIT.cpp
index 96e5c68..09a79f6 100644
--- a/lib/ExecutionEngine/MCJIT/MCJIT.cpp
+++ b/lib/ExecutionEngine/MCJIT/MCJIT.cpp
@@ -104,10 +104,11 @@
 
   // FIXME: Should we be using the mangler for this? Probably.
   StringRef BaseName = F->getName();
+  Twine Name;
   if (BaseName[0] == '\1')
-    BaseName = BaseName.substr(1);
+    Name = BaseName.substr(1);
   else
-    Twine Name = TM->getMCAsmInfo()->getGlobalPrefix() + BaseName;
+    Name = TM->getMCAsmInfo()->getGlobalPrefix() + BaseName;
   return (void*)Dyld.getSymbolAddress(Name.str());
 }