vmount initialize params

- fixes CID 199479

src/drivers/vmount/input_mavlink.cpp

@@ -178,19 +178,13 @@ InputMavlinkCmdMount::InputMavlinkCmdMount(bool stabilize)
 {
 	param_t handle = param_find("MAV_SYS_ID");
 
-	if (handle == PARAM_INVALID) {
-		_mav_sys_id = 1;
-
-	} else {
+	if (handle != PARAM_INVALID) {
 		param_get(handle, &_mav_sys_id);
 	}
 
 	handle = param_find("MAV_COMP_ID");
 
-	if (handle == PARAM_INVALID) {
-		_mav_comp_id = 1;
-
-	} else {
+	if (handle != PARAM_INVALID) {
 		param_get(handle, &_mav_comp_id);
 	}
 }

src/drivers/vmount/input_mavlink.h

@@ -98,8 +98,8 @@ private:
 	orb_advert_t _vehicle_command_ack_pub = nullptr;
 	bool _stabilize[3] = { false, false, false };
 
-	int32_t _mav_sys_id; ///< our mavlink system id
-	int32_t _mav_comp_id; ///< our mavlink component id
+	int32_t _mav_sys_id{1}; ///< our mavlink system id
+	int32_t _mav_comp_id{1}; ///< our mavlink component id
 };