Use glib for all allocations

- Removes need to check for malloc failure
- Removes need for NULL checks on free
- Adds checks for integer overflows
- Removes some extra memset calls
- Removes chance of mixing libc and glib malloc/free

src/common/ctcp.c

@@ -44,12 +44,12 @@ ctcp_reply (session *sess, char *nick, char *word[], char *word_eol[],
 {
 	char tbuf[4096];	/* can receive 2048 from IRC, so this is enough */
 
-	conf = strdup (conf);
+	conf = g_strdup (conf);
 	/* process %C %B etc */
 	check_special_chars (conf, TRUE);
 	auto_insert (tbuf, sizeof (tbuf), conf, word, word_eol, "", "", word_eol[5],
 					 server_get_network (sess->server, TRUE), "", "", nick, "");
-	free (conf);
+	g_free (conf);
 	handle_command (sess, tbuf, FALSE);
 }