sdb_const_anext avoid doing unnecessary steps if no next ptr is given
sdb_const_anext avoid doing unnecessary steps if no next ptr is given

Maijin/sdb,pombredanne/sdb,Maijin/sdb,pombredanne/sdb,Maijin/sdb,radare/sdb,alvarofe/sdb,pombredanne/sdb,Maijin/sdb,pombredanne/sdb,alvarofe/sdb,Maijin/sdb,pombredanne/sdb,Maijin/sdb,radare/sdb,alvarofe/sdb,Maijin/sdb,alvarofe/sdb,radare/sdb,alvarofe/sdb,alvarofe/sdb,radare/sdb,Maijin/sdb,radare/sdb,radare/sdb,Maijin/sdb,radare/sdb,pombredanne/sdb,pombredanne/sdb,radare/sdb,Maijin/sdb,pombredanne/sdb,pombredanne/sdb,alvarofe/sdb,radare/sdb,radare/sdb,alvarofe/sdb,Maijin/sdb,pombredanne/sdb,alvarofe/sdb,alvarofe/sdb,pombredanne/sdb,radare/sdb,alvarofe/sdb