Colin's const-fixing Patch Of Death. Seems to build fine on Windows

as well as Unix, so it can go in.

[originally from svn r3162]

unix/uxplink.c

@@ -574,7 +574,7 @@ int main(int argc, char **argv)
      */
     logctx = log_init(NULL, &cfg);
     {
-	char *error;
+	const char *error;
 	char *realhost;
 	/* nodelay is only useful if stdin is a terminal device */
 	int nodelay = cfg.tcp_nodelay && isatty(0);