[BUGFIX] Fix crop in uri.image ViewHelper

Fix cropping in the uri.image ViewHelper by moving the lines
below the initialization of the image itself.

Change-Id: Ia7d5efdf2d79e3d0448198bbae05fe9df46abc07
Resolves: #68719
Releases: master
Reviewed-on: http://review.typo3.org/42337


Reviewed-by: Josef Glatz <jousch@gmail.com>
Tested-by: Josef Glatz <jousch@gmail.com>
Reviewed-by: Frans Saris <franssaris@gmail.com>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Reviewed-by: Susanne Moog <typo3@susannemoog.de>
Tested-by: Susanne Moog <typo3@susannemoog.de>