wctc4xxp: Fix lock imbalance in wctc4xxp_watchdog.

r10082 "wctc4xxp: Cleanup in-flight commands when halting due to
hardware error." introduced a lock imblance on the error path where the
cmd_list_lock would be unlocked twice when the board is halted due to a
hardware error. Thanks sparse.

Signed-off-by: Shaun Ruffell <sruffell@digium.com>

Origin: http://svnview.digium.com/svn/dahdi?view=rev&rev=10138

git-svn-id: http://svn.asterisk.org/svn/dahdi/linux/branches/2.5@10139 a0bf4364-ded3-4de4-8d8a-66a801d63aff

drivers/dahdi/wctc4xxp/base.c

@@ -3321,6 +3321,7 @@ wctc4xxp_watchdog(unsigned long data)
 					  "Board malfunctioning.  " \
 					  "Halting operation.\n");
 					reschedule_timer = 0;
+					spin_lock(&wc->cmd_list_lock);
 					break;
 				}
 				/* ERROR:  We've retried the command and