Fixing syntax error.

quad/src/quad_app/control_algorithm.c

@@ -358,7 +358,7 @@ int control_algorithm_init(parameter_t * ps)
 	// don't use the PID corrections if the throttle is less than about 10% of its range
     // unless we are in autonomous
 	if((user_input_struct->rc_commands[THROTTLE] > 118000) ||
-        user_defined_struct->flight_mode = AUTO_FLIGHT_MODE)
+        user_defined_struct->flight_mode == AUTO_FLIGHT_MODE)
 	{
 			//THROTTLE