Use clang::io::Emit8

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97810 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Frontend/CacheTokens.cpp b/lib/Frontend/CacheTokens.cpp
index 09b5b45..702c1d0 100644
--- a/lib/Frontend/CacheTokens.cpp
+++ b/lib/Frontend/CacheTokens.cpp
@@ -184,9 +184,7 @@
   /// Emit a token to the PTH file.
   void EmitToken(const Token& T);
 
-  void Emit8(uint32_t V) {
-    Out << (unsigned char)(V);
-  }
+  void Emit8(uint32_t V) { ::Emit8(Out, V); }
 
   void Emit16(uint32_t V) { ::Emit16(Out, V); }