CID 248911: Identical code for different branches (IDENTICAL_BRANCHES)

identical_branches: The same code is executed regardless of whether
clipMask->coordinates() == KoFlake::ObjectBoundingBox is true, because the
'then' and 'else' branches are identical. Should one of the branches be
modified, or the entire 'if' statement replaced?

(cherry picked from commit a06f9205783c1af7b98a38373f0c1bfa2c4711b3)