Use strict node === node.parentNode comparison

Fixes ESLint no-cond-assign warning.

-- Sat, 26 Sep 2015 --
10:38:42        +bursey | while (node = node.parentNode) is invalid
10:38:54        +bursey | should be while (node == node.parentNode)
10:40:38        +bursey | weird actually
10:40:55        +bursey | Elements tend to be "true" in js
10:41:16        +bursey | but if the parentNode is undefined, then it's
                        | false
10:41:50        +bursey | thus it doesn't loop infinitely
10:43:00        +bursey | actually, use === instead of ==

1 files changed, 1 insertions, 1 deletions

diff --git a/js/pomf.js b/js/pomf.js
index bdd3174..bb14e15 100644
--- a/js/pomf.js
+++ b/js/pomf.js
@@ -56,7 +56,7 @@ $(function() {
         $(this).html(btnContent);
         break;
       }
-    } while (node = node.parentNode);
+    } while (node === node.parentNode);
   });
 
   var MAX_SIZE = (function(node) {