Fix SLOW_PWM_HEATERS, issues already patched in 2.0.x

Marlin/Marlin_main.cpp

 
           #if ENABLED(PARKING_EXTRUDER) // Dual Parking extruder
             const float z_diff = hotend_offset[Z_AXIS][active_extruder] - hotend_offset[Z_AXIS][tmp_extruder];
-            float z_raise = 0;
+            float z_raise = PARKING_EXTRUDER_SECURITY_RAISE;
             if (!no_move) {
 
               const float parkingposx[] = PARKING_EXTRUDER_PARKING_X,
                 SERIAL_ECHOLNPGM("Starting Autopark");
                 if (DEBUGGING(LEVELING)) DEBUG_POS("current position:", current_position);
               #endif
-              z_raise = PARKING_EXTRUDER_SECURITY_RAISE;
               current_position[Z_AXIS] += z_raise;
               #if ENABLED(DEBUG_LEVELING_FEATURE)
                 SERIAL_ECHOLNPGM("(1) Raise Z-Axis ");

Marlin/SdBaseFile.cpp

  * the value zero, false, is returned for failure.
  */
 bool SdBaseFile::rmRfStar() {
-  uint16_t index;
+  uint32_t index;
   SdBaseFile f;
   rewind();
   while (curPosition_ < fileSize_) {

Marlin/temperature.cpp

 
     // Macros for Slow PWM timer logic
     #define _SLOW_PWM_ROUTINE(NR, src) \
-      soft_pwm_ ##NR = src; \
-      if (soft_pwm_ ##NR > 0) { \
+      soft_pwm_count_ ##NR = src; \
+      if (soft_pwm_count_ ##NR > 0) { \
         if (state_timer_heater_ ##NR == 0) { \
           if (state_heater_ ##NR == 0) state_timer_heater_ ##NR = MIN_STATE_TIME; \
           state_heater_ ##NR = 1; \
     #define SLOW_PWM_ROUTINE(n) _SLOW_PWM_ROUTINE(n, soft_pwm_amount[n])
 
     #define PWM_OFF_ROUTINE(NR) \
-      if (soft_pwm_ ##NR < slow_pwm_count) { \
+      if (soft_pwm_count_ ##NR < slow_pwm_count) { \
         if (state_timer_heater_ ##NR == 0) { \
           if (state_heater_ ##NR == 1) state_timer_heater_ ##NR = MIN_STATE_TIME; \
           state_heater_ ##NR = 0; \