ArduCopter: use static method to construct AC_InputManager

ArduCopter/Copter.cpp

@@ -66,10 +66,6 @@ Copter::Copter(void)
     mainLoop_count(0),
     rtl_loiter_start_time(0),
     auto_trim_counter(0),
-#if FRAME_CONFIG == HELI_FRAME
-    // ToDo: Input Manager is only used by Heli for 3.3, but will be used by all frames for 3.4
-    input_manager(),
-#endif
     in_mavlink_delay(false),
     param_loader(var_info)
 {

ArduCopter/Copter.h

@@ -593,10 +593,9 @@ private:
 #endif
 
     // Pilot Input Management Library
-    // Only used for Helicopter for AC3.3, to be expanded to include Multirotor
-    // child class for AC3.4
+    // Only used for Helicopter for now
 #if FRAME_CONFIG == HELI_FRAME
-    AC_InputManager_Heli input_manager;
+    AC_InputManager_Heli input_manager = AC_InputManager_Heli::create();
 #endif
 
     AP_ADSB adsb {ahrs};