global: use static method to construct AP_Notify

APMrover2/Rover.h

@@ -251,7 +251,7 @@ private:
     } failsafe;
 
     // notification object for LEDs, buzzers etc (parameter set to false disables external leds)
-    AP_Notify notify;
+    AP_Notify notify = AP_Notify::create();
 
     // true if we have a position estimate from AHRS
     bool have_position;

AntennaTracker/Tracker.h

@@ -96,7 +96,7 @@ private:
     AP_Scheduler scheduler = AP_Scheduler::create();
 
     // notification object for LEDs, buzzers etc
-    AP_Notify notify;
+    AP_Notify notify = AP_Notify::create();
 
     uint32_t start_time_ms = 0;
 

ArduCopter/Copter.h

@@ -178,7 +178,7 @@ private:
     AP_Scheduler scheduler = AP_Scheduler::create();
 
     // AP_Notify instance
-    AP_Notify notify;
+    AP_Notify notify = AP_Notify::create();
 
     // used to detect MAVLink acks from GCS to stop compassmot
     uint8_t command_ack_counter;

ArduPlane/Plane.h

@@ -186,7 +186,7 @@ private:
     RC_Channel *channel_rudder;
 
     // notification object for LEDs, buzzers etc (parameter set to false disables external leds)
-    AP_Notify notify;
+    AP_Notify notify = AP_Notify::create();
 
     DataFlash_Class DataFlash;
 

ArduSub/Sub.h

@@ -148,7 +148,7 @@ private:
     AP_Scheduler scheduler = AP_Scheduler::create();
 
     // AP_Notify instance
-    AP_Notify notify;
+    AP_Notify notify = AP_Notify::create();
 
     // primary input control channels
     RC_Channel *channel_roll;