Staging: rtl8192u: fix space coding style issue in ieee80211_crypt.h

This is a patch to the ieee80211_crypt.h file that fixed up a space
Errors found by the checkpatch.pl tools

Signed-off-by: Ruslan Pisarev <ruslan@rpisarev.org.ua>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>