Fixing build error from commit 95cbc3d

[Attributor] Liveness analysis.

Liveness analysis abstract attribute used to indicate which BasicBlocks are dead and can therefore be ignored.
Right now we are only looking at noreturn calls.

Reviewers: jdoerfert, uenoku

Subscribers: hiraditya, llvm-commits

Differential Revision: https://reviews.llvm.org/D64162

llvm-svn: 366769
diff --git a/llvm/lib/Transforms/Utils/Local.cpp b/llvm/lib/Transforms/Utils/Local.cpp
index be16054..b6d555c 100644
--- a/llvm/lib/Transforms/Utils/Local.cpp
+++ b/llvm/lib/Transforms/Utils/Local.cpp
@@ -1964,7 +1964,7 @@
 }
 
 /// changeToCall - Convert the specified invoke into a normal call.
-static void changeToCall(InvokeInst *II, DomTreeUpdater *DTU = nullptr) {
+void llvm::changeToCall(InvokeInst *II, DomTreeUpdater *DTU) {
   SmallVector<Value*, 8> Args(II->arg_begin(), II->arg_end());
   SmallVector<OperandBundleDef, 1> OpBundles;
   II->getOperandBundlesAsDefs(OpBundles);