Avoid possible uninitialized values in `sdb_dump_dupnext`
Avoid possible uninitialized values in `sdb_dump_dupnext`

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