Auto_Bed_Leveling with positive Z_PROBE_OFFSET_FROM_EXTRUDER

[Roxy]

Here is the 'right' way to fix that forward reference issue that is keeping it from compiling. It is literally a one line fix.
Make the declaration for run_z_probe() have the forward declaration for do_blocking_move_relative() just in front of it.
Usually there is a header file where this would go, but the best place to put this is just in front of the run_z_probe() function so it stays close to where it is needed. That way all the changes are together if you need to move your changes to a more current code base in the future. This time I actually changed my code to verify it would compile! (and then changed it back)

With these changes the run_z_probe() function knows everything about do_blocking_move() that it needs to know. It knows what type (and how many) parameters it takes and it knows what type (none) of value it returns. The compiler can generate a 'call' to the function even though it doesn't know what the function looks like yet.


#endif // AUTO_BED_LEVELING_GRID

static void do_blocking_move_relative(float , float , float ) ; // New line to fix forward reference issue

static void run_z_probe() {
plan_bed_level_matrix.set_to_identity();
feedrate = homing_feedrate[Z_AXIS];