net/mosquitto: Patch QoS 2 in flight bug

Patched until new upstream release is available.
Patch sourced from upstream.

Signed-off-by: Karl Palsson <karlp@remake.is>

net/mosquitto/Makefile

@@ -10,7 +10,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=mosquitto
 PKG_VERSION:=1.4.1
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 PKG_LICENSE:=BSD-3-Clause
 PKG_LICENSE_FILES:=LICENSE.txt
 

net/mosquitto/patches/101-qos2-inflight.patch

@@ -0,0 +1,12 @@
+diff --git a/lib/mosquitto.c b/lib/mosquitto.c
+index bd9dbd3..7314248 100644
+--- a/lib/mosquitto.c
++++ b/lib/mosquitto.c
+@@ -594,7 +594,6 @@ int mosquitto_publish(struct mosquitto *mosq, int *mid, const char *topic, int p
+ 		pthread_mutex_lock(&mosq->out_message_mutex);
+ 		_mosquitto_message_queue(mosq, message, mosq_md_out);
+ 		if(mosq->max_inflight_messages == 0 || mosq->inflight_messages < mosq->max_inflight_messages){
+-			mosq->inflight_messages++;
+ 			if(qos == 1){
+ 				message->state = mosq_ms_wait_for_puback;
+ 			}else if(qos == 2){