Don't pass StringRef by reference.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108366 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/Mips/MipsMCAsmInfo.cpp b/lib/Target/Mips/MipsMCAsmInfo.cpp
index 89e3e11..fe48ab7 100644
--- a/lib/Target/Mips/MipsMCAsmInfo.cpp
+++ b/lib/Target/Mips/MipsMCAsmInfo.cpp
@@ -14,7 +14,7 @@
 #include "MipsMCAsmInfo.h"
 using namespace llvm;
 
-MipsMCAsmInfo::MipsMCAsmInfo(const Target &T, const StringRef &TT) {
+MipsMCAsmInfo::MipsMCAsmInfo(const Target &T, StringRef TT) {
   AlignmentIsInBytes          = false;
   Data16bitsDirective         = "\t.half\t";
   Data32bitsDirective         = "\t.word\t";