FW pos control: Adjust stack size to real use

src/modules/fw_pos_control_l1/fw_pos_control_l1_main.cpp

@@ -1624,7 +1624,7 @@ FixedwingPositionControl::start()
 	_control_task = task_spawn_cmd("fw_pos_control_l1",
 				       SCHED_DEFAULT,
 				       SCHED_PRIORITY_MAX - 5,
-				       2000,
+				       1600,
 				       (main_t)&FixedwingPositionControl::task_main_trampoline,
 				       nullptr);
 

src/modules/fw_pos_control_l1/module.mk

@@ -44,6 +44,8 @@ SRCS		= fw_pos_control_l1_main.cpp \
 		  mtecs/limitoverride.cpp \
 		  mtecs/mTecs_params.c
 
+# Startup handler, the actual app stack size is
+# in the task_spawn command
 MODULE_STACKSIZE = 1200
 
 MAXOPTIMIZATION	 = -Os