Fix null deref
Fix null deref

radare/sdb,alvarofe/sdb,alvarofe/sdb,radare/sdb,alvarofe/sdb,radare/sdb,alvarofe/sdb,radare/sdb,radare/sdb,alvarofe/sdb,alvarofe/sdb,alvarofe/sdb,radare/sdb,alvarofe/sdb,radare/sdb,radare/sdb,radare/sdb,alvarofe/sdb,alvarofe/sdb,alvarofe/sdb,radare/sdb,radare/sdb