Fix grammaros in comments.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53884 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index 882985f..4fa5f58 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -3638,7 +3638,7 @@
   if (SDNode *Existing = FindModifiedNodeSlot(N, Op, InsertPos))
     return SDOperand(Existing, InN.ResNo);
   
-  // Nope it doesn't.  Remove the node from it's current place in the maps.
+  // Nope it doesn't.  Remove the node from its current place in the maps.
   if (InsertPos)
     RemoveNodeFromCSEMaps(N);
   
@@ -3667,7 +3667,7 @@
   if (SDNode *Existing = FindModifiedNodeSlot(N, Op1, Op2, InsertPos))
     return SDOperand(Existing, InN.ResNo);
   
-  // Nope it doesn't.  Remove the node from it's current place in the maps.
+  // Nope it doesn't.  Remove the node from its current place in the maps.
   if (InsertPos)
     RemoveNodeFromCSEMaps(N);