Adds non-breaking spaces at end of lines, rather than end of element

[avdgaag]

When writing HTML like this:

<p>lorem ipsum dolor
sit amet foo
bar baz</p>

...the widont-filter adds non-breaking spaces to the end of every line:

<p>lorem ipsum&nbsp;dolor
sit amet&nbsp;foo
bar&nbsp;baz</p>

It should ignore newlines in a single element and only add the last  .

[nud]

+1