Redundant code in PrettifyTreeprocessor._prettifyETree

[h4b4n3r0]

I just saw following code in https://github.com/Python-Markdown/markdown/blob/master/markdown/treeprocessors.py#L398-L412

if self.md.is_block_level(elem.tag) and elem.tag not in ['code', 'pre']:
    ...
    if not elem.tail or not elem.tail.strip():
        elem.tail = i
if not elem.tail or not elem.tail.strip():
    elem.tail = i

In my opinion the two lines in https://github.com/Python-Markdown/markdown/blob/master/markdown/treeprocessors.py#L409-L410

    if not elem.tail or not elem.tail.strip():
        elem.tail = i

are superfluous as they are called regardless identically in https://github.com/Python-Markdown/markdown/blob/master/markdown/treeprocessors.py#L411-L412. Also with the variable i is not changed.

Solution would be to remove the two lines https://github.com/Python-Markdown/markdown/blob/master/markdown/treeprocessors.py#L409-L410

[waylan]

A PR is welcome.

[h4b4n3r0]

On its way