prevent wrong spliting of db

src/common/optparser.py

@@ -890,9 +890,14 @@ class OptionsParser:
 		con = sqlite.connect(logger.LOG_DB_FILE)
 		os.chdir(back)
 		cur = con.cursor()
+		cur.execute('''SELECT name FROM sqlite_master WHERE type = 'table';''')
+		tables = cur.fetchall() # we get [(u'jids',), (u'unread_messages',), ...
+		tables = [t[0] for t in tables]
 		cur.execute("ATTACH DATABASE '%s' AS cache" % logger.CACHE_DB_PATH)
 		for table in ('caps_cache', 'rooms_last_message_time', 'roster_entry',
 		'roster_group', 'transports_cache'):
+			if table not in tables:
+				continue
 			try:
 				cur.executescript(
 					'INSERT INTO cache.%s SELECT * FROM %s;' % (table, table))