Removed an extra free() in dbd_disconnect(). Found by "Don Kinzer" <dkinzer@easystreet.com>
Removed an extra free() in dbd_disconnect(). Found by "Don Kinzer" <dkinzer@easystreet.com>

cention-nazri/libdbi-drivers,cention-nazri/libdbi-drivers,cention-nazri/libdbi-drivers,cention-nazri/libdbi-drivers