Add StringLiteral::getString -> StringRef.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@82514 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Frontend/PCHReaderStmt.cpp b/lib/Frontend/PCHReaderStmt.cpp
index 67b7c1f..4b9496e 100644
--- a/lib/Frontend/PCHReaderStmt.cpp
+++ b/lib/Frontend/PCHReaderStmt.cpp
@@ -380,8 +380,8 @@
   E->setWide(Record[Idx++]);
 
   // Read string data
-  llvm::SmallVector<char, 16> Str(&Record[Idx], &Record[Idx] + Len);
-  E->setStrData(*Reader.getContext(), Str.data(), Len);
+  llvm::SmallString<16> Str(&Record[Idx], &Record[Idx] + Len);
+  E->setString(*Reader.getContext(), Str.str());
   Idx += Len;
 
   // Read source locations