smr : fix a bug that msg_seek_find_msg_end() can't finish when logs are partially written.
smr : fix a bug that msg_seek_find_msg_end() can't finish when logs are partially written.

cl9200/nbase-arc,cl9200/nbase-arc,sanitysoon/nbase-arc,naver/nbase-arc,cl9200/nbase-arc,cl9200/nbase-arc,otheng03/nbase-arc,naver/nbase-arc,sanitysoon/nbase-arc,naver/nbase-arc,naver/nbase-arc,cl9200/nbase-arc,naver/nbase-arc,sanitysoon/nbase-arc,otheng03/nbase-arc,otheng03/nbase-arc,sanitysoon/nbase-arc,naver/nbase-arc,otheng03/nbase-arc,otheng03/nbase-arc,cl9200/nbase-arc,sanitysoon/nbase-arc,otheng03/nbase-arc,naver/nbase-arc,otheng03/nbase-arc,cl9200/nbase-arc,naver/nbase-arc,sanitysoon/nbase-arc,sanitysoon/nbase-arc,sanitysoon/nbase-arc,otheng03/nbase-arc,cl9200/nbase-arc