[BUGFIX] Reduce spacing CGL violations in class.tx_impexp.php

There were a lot spacing CGL violations in
class.tx_impexp.php. These will be reduced
by this commit.

Change-Id: I075a5ef7df9f2f33d89f90db409bc788a4786410
Resolves: #37306
Releases: 6.0
Reviewed-on: http://review.typo3.org/11306
Reviewed-by: Christian Kuhn
Tested-by: Christian Kuhn