s390/traps: Cleanup get_user() handling in illegal_op()
The usage of get_user() in illegal_op() is quite unusual. Make the code more readable and get rid of unnecessary casts. The generated code is identical before/after this change. Reviewed-by:Sven Schnelle <svens@linux.ibm.com> Signed-off-by:
Heiko Carstens <hca@linux.ibm.com> Signed-off-by:
Vasily Gorbik <gor@linux.ibm.com>
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