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/tools/libclang/CIndexDiagnostic.cpp b/tools/libclang/CIndexDiagnostic.cpp
index 24a2652..67aa770 100644
--- a/tools/libclang/CIndexDiagnostic.cpp
+++ b/tools/libclang/CIndexDiagnostic.cpp
@@ -180,7 +180,7 @@
     TU->Diagnostics = Set;
     DiagnosticOptions DOpts;
     CXDiagnosticRenderer Renderer(AU->getSourceManager(),
-                                  AU->getASTContext().getLangOptions(),
+                                  AU->getASTContext().getLangOpts(),
                                   DOpts, Set);
     
     for (ASTUnit::stored_diag_iterator it = AU->stored_diag_begin(),