[network-data] fix to ensure resubmit delay (#4644)
[network-data] fix to ensure resubmit delay (#4644)

Fix bug introduced in 5ebc583 when changing from VerifyOrExit to if.
lanyuwen/openthread,chshu/openthread,bukepo/openthread,srickardti/openthread,librasungirl/openthread,abtink/openthread,chshu/openthread,chshu/openthread,openthread/openthread,librasungirl/openthread,lanyuwen/openthread,jwhui/openthread,lanyuwen/openthread,jwhui/openthread,bukepo/openthread,abtink/openthread,lanyuwen/openthread,openthread/openthread,srickardti/openthread,bukepo/openthread,abtink/openthread,chshu/openthread,librasungirl/openthread,chshu/openthread,lanyuwen/openthread,srickardti/openthread,chshu/openthread,lanyuwen/openthread,srickardti/openthread,jwhui/openthread,abtink/openthread,openthread/openthread,openthread/openthread,jwhui/openthread,bukepo/openthread,librasungirl/openthread