Add db_assert() for unpacked value.
Add db_assert() for unpacked value.

guiquanz/stronglink,iOSCowboy/stronglink,rmoorman/stronglink,Ryezhang/stronglink,btrask/stronglink,guiquanz/stronglink,iOSCowboy/stronglink,shaunstanislaus/stronglink,Lacra17/stronglink,feld/stronglink,guiquanz/stronglink,Ryezhang/stronglink,iOSCowboy/stronglink,Lacra17/stronglink,btrask/stronglink,yamingd/stronglink,feld/stronglink,btrask/stronglink,Lacra17/stronglink,rmoorman/stronglink,nkatsaros/stronglink,shaunstanislaus/stronglink,yamingd/stronglink,feld/stronglink,Ryezhang/stronglink,nkatsaros/stronglink,yamingd/stronglink,btrask/stronglink,nkatsaros/stronglink,shaunstanislaus/stronglink,rmoorman/stronglink