Refine illegal message source characters: * is in, - is out.

IRCNet uses message sources like *.se (ie masked server names) after a
netsplit.


git-svn-id: svn://svn.code.sf.net/p/bitchx/code/trunk@509 13b04d17-f746-0410-82c6-800466cd88b0

source/parse.c

@@ -1953,7 +1953,7 @@ void parse_server(char *orig_line)
 
 	/* Check for egregiously bad nicknames */
 #define islegal(c) (((c) >= 'A' && (c) <= '~') || \
-	((c) >= '0' && (c) <= '9') || (c) == '-' || (c & 0x80))
+	((c) >= '0' && (c) <= '9') || (c) == '*' || (c & 0x80))
 
 	if (*from && (!islegal(*from) || strchr(from, ',')))
 	{