Add missing period to comment to match style of file.

This is a test commit to show that my commit access is working.

llvm-svn: 343842
diff --git a/llvm/lib/Transforms/Scalar/LoopUnrollPass.cpp b/llvm/lib/Transforms/Scalar/LoopUnrollPass.cpp
index e955821..d980cde 100644
--- a/llvm/lib/Transforms/Scalar/LoopUnrollPass.cpp
+++ b/llvm/lib/Transforms/Scalar/LoopUnrollPass.cpp
@@ -801,7 +801,7 @@
     }
   }
 
-  // 4th priority is loop peeling
+  // 4th priority is loop peeling.
   computePeelCount(L, LoopSize, UP, TripCount, SE);
   if (UP.PeelCount) {
     UP.Runtime = false;