added try for reading config file

seafile-ldap.py

@@ -71,8 +71,11 @@ cwd = os.path.dirname(os.path.realpath(__file__))
 # import the config file
 logger.debug("Starting to read the ini config.")
 logger.debug("Using file {0}/config.ini.".format(cwd))
-config = configparser.ConfigParser()
-config.read(cwd + '/config.ini')
+try:
+    config = configparser.ConfigParser()
+    config.read(cwd + '/config.ini')
+except ValueError:
+    logger.critical("Unable to find/read config file. ")
 
 serverDNS = config['LDAP SERVER']['server']
 serverPort = config['LDAP SERVER'].getint('port')