Disableing "Add views row classes" causes div's with whitespace

When disableing the "Add views row classes" option in views unformatted list style, the output looks like
<div >

This is caused by the following code pattern:

<div <?php if ($classes_array[$id]) { print 'class="' . $classes_array[$id] .'"';  } ?>>

The problem is obvious, the whitespace has to be moved into the if condition. This is a problem in all views templates. If this patch is reviewed and there are no reasons to not change this, I'm willing to make a patch for every template I find.