Another misuse of StringRef. MSVC is very sensitive to that kind of error.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134236 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 2 insertions, 2 deletions

diff --git a/lib/MC/SubtargetFeature.cpp b/lib/MC/SubtargetFeature.cpp
index c930baf1ba..d72c346eea 100644
--- a/lib/MC/SubtargetFeature.cpp
+++ b/lib/MC/SubtargetFeature.cpp
@@ -53,14 +53,14 @@ static inline bool isEnabled(const StringRef Feature) {
 
 /// PrependFlag - Return a string with a prepended flag; '+' or '-'.
 ///
-static inline StringRef PrependFlag(const StringRef Feature,
+static inline std::string PrependFlag(const StringRef Feature,
                                     bool IsEnabled) {
   assert(!Feature.empty() && "Empty string");
   if (hasFlag(Feature))
     return Feature;
   std::string Prefix = IsEnabled ? "+" : "-";
   Prefix += Feature;
-  return StringRef(Prefix);
+  return Prefix;
 }
 
 /// Split - Splits a string of comma separated items in to a vector of strings.