Another round of GCC5 fixes.
diff --git a/llvm/lib/TextAPI/MachO/InterfaceFile.cpp b/llvm/lib/TextAPI/MachO/InterfaceFile.cpp
index aae5c23..0a392a2 100644
--- a/llvm/lib/TextAPI/MachO/InterfaceFile.cpp
+++ b/llvm/lib/TextAPI/MachO/InterfaceFile.cpp
@@ -81,7 +81,7 @@
     return;
   }
 
-  UUIDs.emplace(Iter, Target_, UUID);
+  UUIDs.emplace(Iter, Target_, std::string(UUID));
   return;
 }