Update LLVM for 3.5 rebase (r209712).

Change-Id: I149556c940fb7dc92d075273c87ff584f400941f
diff --git a/lib/Analysis/Analysis.cpp b/lib/Analysis/Analysis.cpp
index c960123..01c1c7e 100644
--- a/lib/Analysis/Analysis.cpp
+++ b/lib/Analysis/Analysis.cpp
@@ -73,7 +73,7 @@
 
 LLVMBool LLVMVerifyModule(LLVMModuleRef M, LLVMVerifierFailureAction Action,
                           char **OutMessages) {
-  raw_ostream *DebugOS = Action != LLVMReturnStatusAction ? &errs() : 0;
+  raw_ostream *DebugOS = Action != LLVMReturnStatusAction ? &errs() : nullptr;
   std::string Messages;
   raw_string_ostream MsgsOS(Messages);
 
@@ -94,7 +94,8 @@
 
 LLVMBool LLVMVerifyFunction(LLVMValueRef Fn, LLVMVerifierFailureAction Action) {
   LLVMBool Result = verifyFunction(
-      *unwrap<Function>(Fn), Action != LLVMReturnStatusAction ? &errs() : 0);
+      *unwrap<Function>(Fn), Action != LLVMReturnStatusAction ? &errs()
+                                                              : nullptr);
 
   if (Action == LLVMAbortProcessAction && Result)
     report_fatal_error("Broken function found, compilation aborted!");