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/Rewrite/RewriteObjC.cpp b/lib/Rewrite/RewriteObjC.cpp
index b317a2f..3a59cc2 100644
--- a/lib/Rewrite/RewriteObjC.cpp
+++ b/lib/Rewrite/RewriteObjC.cpp
@@ -630,7 +630,7 @@
   MainFileStart = MainBuf->getBufferStart();
   MainFileEnd = MainBuf->getBufferEnd();
 
-  Rewrite.setSourceMgr(Context->getSourceManager(), Context->getLangOptions());
+  Rewrite.setSourceMgr(Context->getSourceManager(), Context->getLangOpts());
 }
 
 //===----------------------------------------------------------------------===//