Remove unused variable

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@98691 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Lex/Lexer.cpp b/lib/Lex/Lexer.cpp
index 60a1707..2f89142 100644
--- a/lib/Lex/Lexer.cpp
+++ b/lib/Lex/Lexer.cpp
@@ -163,7 +163,6 @@
   // Now that the lexer is created, change the start/end locations so that we
   // just lex the subsection of the file that we want.  This is lexing from a
   // scratch buffer.
-  bool Invalid = false;
   const char *StrData = SM.getCharacterData(SpellingLoc);
 
   L->BufferPtr = StrData;