Minor code cleanup

Marlin/src/feature/tmc_util.cpp

     #endif
   }
 
-  if (axis_connection) ui.set_status_P(GET_TEXT(MSG_ERROR_TMC));
+  if (axis_connection) LCD_MESSAGEPGM(MSG_ERROR_TMC);
 }
 
 #endif // HAS_TRINAMIC_CONFIG

Marlin/src/inc/Conditionals_post.h

     #define SHARED_SD_CARD
   #endif
   #if DISABLED(SHARED_SD_CARD)
-    #define INIT_SDCARD_ON_BOOT
+    #define INIT_SDCARD_ON_BOOT 1
   #endif
 #endif
 

Marlin/src/lcd/HD44780/ultralcd_HD44780.cpp

 }
 
 bool MarlinUI::detected() {
-  return true
+  return (true
     #if EITHER(LCD_I2C_TYPE_MCP23017, LCD_I2C_TYPE_MCP23008) && defined(DETECT_DEVICE)
       && lcd.LcdDetected() == 1
     #endif
-  ;
+  );
 }
 
 #if HAS_SLOW_BUTTONS

Marlin/src/lcd/dogm/ultralcd_DOGM.cpp

   #if DISABLED(MKS_LCD12864B)
 
     #if PIN_EXISTS(LCD_BACKLIGHT)
-      OUT_WRITE(LCD_BACKLIGHT_PIN, (
-        #if ENABLED(DELAYED_BACKLIGHT_INIT)
-          LOW  // Illuminate after reset
-        #else
-          HIGH // Illuminate right away
-        #endif
-      ));
+      OUT_WRITE(LCD_BACKLIGHT_PIN, DISABLED(DELAYED_BACKLIGHT_INIT)); // Illuminate after reset or right away
     #endif
 
     #if EITHER(MKS_12864OLED, MKS_12864OLED_SSD1306)

Marlin/src/lcd/extui/lib/dgus/DGUSDisplay.cpp

     DGUSLCD_SendStringToDisplay(var);
   }
 
-
   void DGUSScreenVariableHandler::SDCardInserted() {
     top_file = 0;
     auto cs = ScreenHandler.getCurrentScreen();

Marlin/src/lcd/ultralcd.cpp

     #endif
   #endif
 
-  #if HAS_ENCODER_ACTION
-    #if HAS_SLOW_BUTTONS
-      slow_buttons = 0;
-    #endif
+  #if HAS_ENCODER_ACTION && HAS_SLOW_BUTTONS
+    slow_buttons = 0;
   #endif
 
   update_buttons();

Marlin/src/module/configuration_store.cpp

       DEBUG_ECHO_START();
       DEBUG_ECHOLNPAIR("EEPROM version mismatch (EEPROM=", stored_ver, " Marlin=" EEPROM_VERSION ")");
       #if HAS_LCD_MENU && DISABLED(EEPROM_AUTO_INIT)
-        ui.set_status_P(GET_TEXT(MSG_ERR_EEPROM_VERSION));
+        LCD_MESSAGEPGM(MSG_ERR_EEPROM_VERSION);
       #endif
       eeprom_error = true;
     }
         DEBUG_ECHO_START();
         DEBUG_ECHOLNPAIR("Index: ", int(eeprom_index - (EEPROM_OFFSET)), " Size: ", datasize());
         #if HAS_LCD_MENU && DISABLED(EEPROM_AUTO_INIT)
-          ui.set_status_P(GET_TEXT(MSG_ERR_EEPROM_INDEX));
+          LCD_MESSAGEPGM(MSG_ERR_EEPROM_INDEX);
         #endif
       }
       else if (working_crc != stored_crc) {
         DEBUG_ERROR_START();
         DEBUG_ECHOLNPAIR("EEPROM CRC mismatch - (stored) ", stored_crc, " != ", working_crc, " (calculated)!");
         #if HAS_LCD_MENU && DISABLED(EEPROM_AUTO_INIT)
-          ui.set_status_P(GET_TEXT(MSG_ERR_EEPROM_CRC));
+          LCD_MESSAGEPGM(MSG_ERR_EEPROM_CRC);
         #endif
       }
       else if (!validating) {

Marlin/src/module/temperature.cpp

 
         // Make sure heating is actually working
         #if WATCH_BED || WATCH_HOTENDS
-          if (
-            #if WATCH_BED && WATCH_HOTENDS
-              true
-            #elif WATCH_HOTENDS
-              !isbed
-            #else
-              isbed
-            #endif
-          ) {
-            if (!heated) {                                          // If not yet reached target...
-              if (current_temp > next_watch_temp) {                      // Over the watch temp?
-                next_watch_temp = current_temp + watch_temp_increase;    // - set the next temp to watch for
-                temp_change_ms = ms + watch_temp_period * 1000UL;   // - move the expiration timer up
-                if (current_temp > watch_temp_target) heated = true;     // - Flag if target temperature reached
+          if (BOTH(WATCH_BED, WATCH_HOTENDS) || isbed == DISABLED(WATCH_HOTENDS)) {
+            if (!heated) {                                            // If not yet reached target...
+              if (current_temp > next_watch_temp) {                   // Over the watch temp?
+                next_watch_temp = current_temp + watch_temp_increase; // - set the next temp to watch for
+                temp_change_ms = ms + watch_temp_period * 1000UL;     // - move the expiration timer up
+                if (current_temp > watch_temp_target) heated = true;  // - Flag if target temperature reached
               }
-              else if (ELAPSED(ms, temp_change_ms))                 // Watch timer expired
+              else if (ELAPSED(ms, temp_change_ms))                   // Watch timer expired
                 _temp_error(heater, str_t_heating_failed, GET_TEXT(MSG_HEATING_FAILED_LCD));
             }
             else if (current_temp < target - (MAX_OVERSHOOT_PID_AUTOTUNE)) // Heated, then temperature fell too far?