init logger vars when no log to migrate

src/common/check_paths.py

@@ -107,4 +107,5 @@ def check_and_possibly_create_paths():
 			print _('creating %s directory') % VCARDPATH
 			os.mkdir(VCARDPATH, 0700)
 		if not os.path.isfile(LOG_DB_PATH):
-			create_log_db()
+			create_log_db()
+			gajim.logger.init_vars()