StringMap::first() is about to start returning a StringRef, adapt.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@135166 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Basic/Targets.cpp b/lib/Basic/Targets.cpp
index b812300..a3cdef1 100644
--- a/lib/Basic/Targets.cpp
+++ b/lib/Basic/Targets.cpp
@@ -3055,7 +3055,8 @@
   Opts.Features.clear();
   for (llvm::StringMap<bool>::const_iterator it = Features.begin(),
          ie = Features.end(); it != ie; ++it)
-    Opts.Features.push_back(std::string(it->second ? "+" : "-") + it->first());
+    Opts.Features.push_back(std::string(it->second ? "+" : "-") +
+                            llvm::StringRef(it->first()).str());
   Target->HandleTargetFeatures(Opts.Features);
 
   return Target.take();