staging/lustre/lnet: Dropped messages are not accounted correctly

LNET messages that are dropped are not accounted for correctly in
/proc/sys/lnet/stats. What I assume to be a simple typo is causing
drop_length to be double-counted and drop_count to never be
incremented.
Signed-off-by: Matt Ezell <ezellma@ornl.gov>
Reviewed-on: http://review.whamcloud.com/9096
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-4577Reviewed-by: James Nunez <james.a.nunez@intel.com>
Reviewed-by: James Simmons <uja.ornl@gmail.com>
Reviewed-by: Isaac Huang <he.huang@intel.com>
Reviewed-by: Liang Zhen <liang.zhen@intel.com>
Signed-off-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/lustre/lnet/lnet/api-ni.c

@@ -338,7 +338,7 @@ lnet_counters_get(lnet_counters_t *counters)
 		counters->send_count   += ctr->send_count;
 		counters->recv_count   += ctr->recv_count;
 		counters->route_count  += ctr->route_count;
-		counters->drop_length  += ctr->drop_length;
+		counters->drop_count   += ctr->drop_count;
 		counters->send_length  += ctr->send_length;
 		counters->recv_length  += ctr->recv_length;
 		counters->route_length += ctr->route_length;