udhcpc: run "deconfig" script in manual renew state too. closes 9061

The bug was seen when the following is done:

    # killall 1 udhpc; killall 2 udhpc

Performing a DHCP renew
state: 2 -> 5
Sending renew...
Entering released state
state: 5 -> 6  <<<<<<<<<<<<<< not calling script!!!!

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

networking/udhcp/dhcpc.c

@@ -1118,7 +1118,11 @@ static void perform_release(uint32_t server_addr, uint32_t requested_ip)
 	struct in_addr temp_addr;
 
 	/* send release packet */
-	if (state == BOUND || state == RENEWING || state == REBINDING) {
+	if (state == BOUND
+	 || state == RENEWING
+	 || state == REBINDING
+	 || state == RENEW_REQUESTED
+	) {
 		temp_addr.s_addr = server_addr;
 		strcpy(buffer, inet_ntoa(temp_addr));
 		temp_addr.s_addr = requested_ip;