Fixed typo; now actually uses entered signpass value.

reaction-mailcreate/createMails.py

@@ -141,7 +141,7 @@ if args.smtppass == '-':
 if args.signpass == '-':
     args.signpass = getpass.getpass('Signature key password: ')
 if args.signpass:
-    args.signarg['passphrase']: args.signpass
+    args.signarg['passphrase'] = args.signpass
 
 if args.sign and 'keyid' not in args.signarg:
     args.signarg['keyid'] = args.sender