change dx, dy, dz and de from float to long

anything is long, we don't need float there

Marlin/planner.cpp

@@ -507,7 +507,7 @@ float junction_deviation = 0.1;
   target[Z_AXIS] = lround(z * axis_steps_per_unit[Z_AXIS]);
   target[E_AXIS] = lround(e * axis_steps_per_unit[E_AXIS]);
 
-  float dx = target[X_AXIS] - position[X_AXIS],
+  long dx = target[X_AXIS] - position[X_AXIS],
        dy = target[Y_AXIS] - position[Y_AXIS],
        dz = target[Z_AXIS] - position[Z_AXIS];
 
@@ -515,7 +515,7 @@ float junction_deviation = 0.1;
   if (marlin_debug_flags & DEBUG_DRYRUN)
     position[E_AXIS] = target[E_AXIS];
 
-  float de = target[E_AXIS] - position[E_AXIS];
+  long de = target[E_AXIS] - position[E_AXIS];
 
   #if ENABLED(PREVENT_DANGEROUS_EXTRUDE)
     if (de) {