Clean up something noticed by Fritz.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127684 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Utils/LCSSA.cpp b/lib/Transforms/Utils/LCSSA.cpp
index ade4a43..fce7f15 100644
--- a/lib/Transforms/Utils/LCSSA.cpp
+++ b/lib/Transforms/Utils/LCSSA.cpp
@@ -269,7 +269,7 @@
 
   // Remove PHI nodes that did not have any uses rewritten.
   for (unsigned i = 0, e = AddedPHIs.size(); i != e; ++i) {
-    if (!AddedPHIs[i]->hasNUsesOrMore(1))
+    if (AddedPHIs[i]->use_empty())
       AddedPHIs[i]->eraseFromParent();
   }