(ids) fix for https://github.com/opnsense/core/issues/1516

(cherry picked from commit 5f17abb3)

src/opnsense/scripts/suricata/lib/rulecache.py

@@ -170,6 +170,7 @@ class RuleCache(object):
             os.remove(self.cachefile)
 
         db = sqlite3.connect(self.cachefile)
+        db.text_factory = lambda x: unicode(x, 'utf-8', 'ignore')
         cur = db.cursor()
 
         cur.execute("create table stats (timestamp number, files number)")