xfrm: consistently use time64_t in xfrm_timer_handler()

For some reason, blamed commit did the right thing in xfrm_policy_timer()
but did not in xfrm_timer_handler()

Fixes: 386c5680 ("xfrm: use time64_t for in-kernel timestamps")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Steffen Klassert <steffen.klassert@secunet.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>

net/xfrm/xfrm_state.c

@@ -577,7 +577,7 @@ static enum hrtimer_restart xfrm_timer_handler(struct hrtimer *me)
 	if (x->km.state == XFRM_STATE_EXPIRED)
 		goto expired;
 	if (x->lft.hard_add_expires_seconds) {
-		long tmo = x->lft.hard_add_expires_seconds +
+		time64_t tmo = x->lft.hard_add_expires_seconds +
 			x->curlft.add_time - now;
 		if (tmo <= 0) {
 			if (x->xflags & XFRM_SOFT_EXPIRE) {
@@ -594,7 +594,7 @@ static enum hrtimer_restart xfrm_timer_handler(struct hrtimer *me)
 			next = tmo;
 	}
 	if (x->lft.hard_use_expires_seconds) {
-		long tmo = x->lft.hard_use_expires_seconds +
+		time64_t tmo = x->lft.hard_use_expires_seconds +
 			(x->curlft.use_time ? : now) - now;
 		if (tmo <= 0)
 			goto expired;
@@ -604,7 +604,7 @@ static enum hrtimer_restart xfrm_timer_handler(struct hrtimer *me)
 	if (x->km.dying)
 		goto resched;
 	if (x->lft.soft_add_expires_seconds) {
-		long tmo = x->lft.soft_add_expires_seconds +
+		time64_t tmo = x->lft.soft_add_expires_seconds +
 			x->curlft.add_time - now;
 		if (tmo <= 0) {
 			warn = 1;
@@ -616,7 +616,7 @@ static enum hrtimer_restart xfrm_timer_handler(struct hrtimer *me)
 		}
 	}
 	if (x->lft.soft_use_expires_seconds) {
-		long tmo = x->lft.soft_use_expires_seconds +
+		time64_t tmo = x->lft.soft_use_expires_seconds +
 			(x->curlft.use_time ? : now) - now;
 		if (tmo <= 0)
 			warn = 1;