Fixed typo.

llvm-svn: 278565
diff --git a/llvm/lib/Transforms/Utils/SimplifyCFG.cpp b/llvm/lib/Transforms/Utils/SimplifyCFG.cpp
index eae2b33..e88d7eb 100644
--- a/llvm/lib/Transforms/Utils/SimplifyCFG.cpp
+++ b/llvm/lib/Transforms/Utils/SimplifyCFG.cpp
@@ -1539,7 +1539,7 @@
       continue;
     --MaxNumInstToLookAt;
 
-    // Could be calling an instruction that effects memory like free().
+    // Could be calling an instruction that affects memory like free().
     if (CurI.mayHaveSideEffects() && !isa<StoreInst>(CurI))
       return nullptr;