gprs_ns2: fix missing notify towards the NSE when NSVC become blocked

The NSE wasn't notified when a NSVC went into the BLOCKED state from
an UNBLOCKED state.

Related: OS#5182
Change-Id: I09634e414e9bb966e6b5809b7de1b59fbabd413d
diff --git a/src/gb/gprs_ns2_vc_fsm.c b/src/gb/gprs_ns2_vc_fsm.c
index 341a5a1..70258cc 100644
--- a/src/gb/gprs_ns2_vc_fsm.c
+++ b/src/gb/gprs_ns2_vc_fsm.c
@@ -338,6 +338,7 @@
 		rate_ctr_inc(rate_ctr_group_get_ctr(priv->nsvc->ctrg, NS_CTR_BLOCKED));
 	}
 
+	ns2_nse_notify_unblocked(priv->nsvc, false);
 	if (priv->om_blocked) {
 		/* we are already blocked after a RESET */
 		if (old_state == GPRS_NS2_ST_RESET) {