[analyzer] Fix keyboard navigation for .msgNote events

Does not go to msgNote's.

Differential Revision: https://reviews.llvm.org/D50595

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@339493 91177308-0d34-0410-b5e6-96231b3b80d8

lib/StaticAnalyzer/Core/HTMLDiagnostics.cpp

@@ -997,7 +997,8 @@ var numToId = function(num) {
 };
 
 var navigateTo = function(up) {
-  var numItems = document.querySelectorAll(".line > .msg").length;
+  var numItems = document.querySelectorAll(
+      ".line > .msgEvent, .line > .msgControl").length;
   var currentSelected = findNum();
   var newSelected = move(currentSelected, up, numItems);
   var newEl = numToId(newSelected, numItems);