added check for config.ini

seafile-ldap.py

@@ -72,11 +72,12 @@ configPath = os.path.join(cwd, 'config.ini')
 # import the config file
 logger.debug("Starting to read the ini config.")
 logger.debug("Using file {0}.".format(configPath))
-try:
+if os.path.exists(configPath):
     config = configparser.ConfigParser()
     config.read(cwd + '/config.ini')
-except ValueError:
-    logger.critical("Unable to find/read config file. ")
+else:
+    logger.critical("Unable to find/read config file. Please ensure the config.ini is in the same directory as this script and readable.")
+    exit(1)
 
 serverDNS = config['LDAP SERVER']['server']
 serverPort = config['LDAP SERVER'].getint('port')