Unify naming of LangOptions variable/get function across the Clang stack (Lex to AST).

The member variable is always "LangOpts" and the member function is always "getLangOpts".

Reviewed by Chris Lattner

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@152536 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Frontend/FrontendActions.cpp b/lib/Frontend/FrontendActions.cpp
index a4e168b..737ee4a 100644
--- a/lib/Frontend/FrontendActions.cpp
+++ b/lib/Frontend/FrontendActions.cpp
@@ -364,7 +364,7 @@
 
   // Start lexing the specified input file.
   const llvm::MemoryBuffer *FromFile = SM.getBuffer(SM.getMainFileID());
-  Lexer RawLex(SM.getMainFileID(), FromFile, SM, PP.getLangOptions());
+  Lexer RawLex(SM.getMainFileID(), FromFile, SM, PP.getLangOpts());
   RawLex.SetKeepWhitespaceMode(true);
 
   Token RawTok;