No need to call setIdentifierInfo() after LookUpIdentifierInfo() which LookUpIdentifierInfo() will automatically do

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@98435 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Frontend/CacheTokens.cpp b/lib/Frontend/CacheTokens.cpp
index c845d56..ab5465a 100644
--- a/lib/Frontend/CacheTokens.cpp
+++ b/lib/Frontend/CacheTokens.cpp
@@ -295,7 +295,7 @@
     }
 
     if (Tok.is(tok::identifier)) {
-      Tok.setIdentifierInfo(PP.LookUpIdentifierInfo(Tok));
+      PP.LookUpIdentifierInfo(Tok);
       EmitToken(Tok);
       continue;
     }
@@ -321,7 +321,6 @@
       }
 
       IdentifierInfo* II = PP.LookUpIdentifierInfo(Tok);
-      Tok.setIdentifierInfo(II);
       tok::PPKeywordKind K = II->getPPKeywordID();
 
       ParsingPreprocessorDirective = true;
@@ -344,7 +343,7 @@
         L.setParsingPreprocessorDirective(false);
         assert(!Tok.isAtStartOfLine());
         if (Tok.is(tok::identifier))
-          Tok.setIdentifierInfo(PP.LookUpIdentifierInfo(Tok));
+          PP.LookUpIdentifierInfo(Tok);
 
         break;
       }