[DAGCombiner] Fix Comment. NFC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@356069 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
index 1095b41..f6363e2 100644
--- a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
+++ b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
@@ -1709,7 +1709,7 @@
   if (OptLevel == CodeGenOpt::None)
     return SDValue();
 
-  // If this is used only a single token factor, we should make sure we have a
+  // If the sole user is a token factor, we should make sure we have a
   // chance to merge them together. This prevents TF chains from inhibiting
   // optimizations.
   if (N->hasOneUse() && N->use_begin()->getOpcode() == ISD::TokenFactor)