Fix whitespace, comments.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101247 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/Support/CFG.h

@@ -33,7 +33,7 @@ class PredIterator : public std::iterator<std::forward_iterator_tag,
   USE_iterator It;
 
   inline void advancePastNonTerminators() {
-    // Loop to ignore non terminator uses (for example PHI nodes)...
+    // Loop to ignore non terminator uses (for example PHI nodes).
     while (!It.atEnd() && !isa<TerminatorInst>(*It))
       ++It;
   }