Merge pull request #7572 from mr-vinn/application-js-fix

Handle undefined text area values

app/assets/javascripts/application.js.coffee

@@ -63,7 +63,7 @@ window.extractLast = (term) ->
   return split( term ).pop()
 
 window.rstrip = (val) ->
-  return val.replace(/\s+$/, '')
+  return if val then val.replace(/\s+$/, '') else val
 
 # Disable button if text field is empty
 window.disableButtonIfEmptyField = (field_selector, button_selector) ->