Use StringRef in Pass/PassManager APIs (NFC)

llvm-svn: 283004
diff --git a/llvm/lib/CodeGen/WinEHPrepare.cpp b/llvm/lib/CodeGen/WinEHPrepare.cpp
index 041fb7b..d3dc401 100644
--- a/llvm/lib/CodeGen/WinEHPrepare.cpp
+++ b/llvm/lib/CodeGen/WinEHPrepare.cpp
@@ -62,7 +62,7 @@
 
   void getAnalysisUsage(AnalysisUsage &AU) const override;
 
-  const char *getPassName() const override {
+  StringRef getPassName() const override {
     return "Windows exception handling preparation";
   }