Track IntrusiveRefCntPtr::get() changes from LLVM r212366

llvm-svn: 212369
diff --git a/clang/lib/Frontend/CompilerInstance.cpp b/clang/lib/Frontend/CompilerInstance.cpp
index 60f8ae8..3b69fa2 100644
--- a/clang/lib/Frontend/CompilerInstance.cpp
+++ b/clang/lib/Frontend/CompilerInstance.cpp
@@ -336,7 +336,7 @@
       AllowPCHWithCompilerErrors, getPreprocessor(), getASTContext(),
       DeserializationListener, OwnDeserializationListener, Preamble,
       getFrontendOpts().UseGlobalModuleIndex);
-  ModuleManager = static_cast<ASTReader*>(Source.getPtr());
+  ModuleManager = static_cast<ASTReader*>(Source.get());
   getASTContext().setExternalSource(Source);
 }