gps_blending add protection against accessing non-exist array item

src/modules/sensors/vehicle_gps_position/gps_blending.hpp

@@ -67,9 +67,11 @@ public:
 
 	void setGpsData(const sensor_gps_s &gps_data, int instance)
 	{
+		if (instance < GPS_MAX_RECEIVERS_BLEND) {
 			_gps_state[instance] = gps_data;
 			_gps_updated[instance] = true;
 		}
+	}
 	void setBlendingUseSpeedAccuracy(bool enabled) { _blend_use_spd_acc = enabled; }
 	void setBlendingUseHPosAccuracy(bool enabled) { _blend_use_hpos_acc = enabled; }
 	void setBlendingUseVPosAccuracy(bool enabled) { _blend_use_vpos_acc = enabled; }