Fix xp_lock, srec deadlock.
Fix xp_lock, srec deadlock.

The xp_lock and srec locks were taken in the wrong order in
evchan_ureg_imp.

Coverity CID 30340.

Signed-off-by: Matt Benjamin <1fa2ef4755a9226cb9a0a4840bd89b158ac71391@linuxbox.com>

sswen/ntirpc,sswen/ntirpc