Fix kill messages

Firmware/Marlin_main.cpp

@@ -5944,7 +5944,7 @@ Sigma_Exit:
     //! ### M112 - Emergency stop
     // -----------------------------------------
     case 112: 
-      kill(_n(""), 3);
+      kill(MSG_M112_KILL, 3);
       break;
 
     //! ### M140 - Set bed temperature
@@ -8626,7 +8626,7 @@ if(0)
 
   if( (_millis() - previous_millis_cmd) >  max_inactive_time )
     if(max_inactive_time)
-      kill(_n(""), 4);
+      kill(_n("Inactivity Shutdown"), 4);
   if(stepper_inactive_time)  {
     if( (_millis() - previous_millis_cmd) >  stepper_inactive_time )
     {
@@ -8667,7 +8667,7 @@ if(0)
     // ----------------------------------------------------------------
     if ( killCount >= KILL_DELAY)
     {
-       kill("", 5);
+       kill(NULL, 5);
     }
   #endif
     

Firmware/cardreader.cpp

@@ -359,10 +359,10 @@ void CardReader::openFile(const char* name,bool read, bool replace_current/*=tru
     {
      if((int)file_subcall_ctr>(int)SD_PROCEDURE_DEPTH-1)
      {
-       SERIAL_ERROR_START;
-       SERIAL_ERRORPGM("trying to call sub-gcode files with too many levels. MAX level is:");
-       SERIAL_ERRORLN(SD_PROCEDURE_DEPTH);
-       kill("", 1);
+       // SERIAL_ERROR_START;
+       // SERIAL_ERRORPGM("trying to call sub-gcode files with too many levels. MAX level is:");
+       // SERIAL_ERRORLN(SD_PROCEDURE_DEPTH);
+       kill(_n("trying to call sub-gcode files with too many levels."), 1);
        return;
      }
      

Firmware/cmdqueue.cpp

@@ -500,7 +500,7 @@ void get_command()
 
         //If command was e-stop process now
         if(strcmp(cmdbuffer+bufindw+CMDHDRSIZE, "M112") == 0)
-          kill("", 2);
+          kill(MSG_M112_KILL, 2);
         
         // Store the current line into buffer, move to the next line.
 		// Store type of entry

Firmware/messages.c

@@ -160,3 +160,4 @@ const char MSG_OCTOPRINT_RESUMED[] PROGMEM_N1 = "// action:resumed"; ////
 const char MSG_OCTOPRINT_CANCEL[] PROGMEM_N1 = "// action:cancel"; ////
 const char MSG_FANCHECK_EXTRUDER[] PROGMEM_N1 = "Err: EXTR. FAN ERROR"; ////c=20
 const char MSG_FANCHECK_PRINT[] PROGMEM_N1 = "Err: PRINT FAN ERROR"; ////c=20
+const char MSG_M112_KILL[] PROGMEM_N1 = "M112 called. Emergency Stop."; ////c=20

Firmware/messages.h

@@ -161,6 +161,7 @@ extern const char MSG_OCTOPRINT_RESUMED[];
 extern const char MSG_OCTOPRINT_CANCEL[];
 extern const char MSG_FANCHECK_EXTRUDER[];
 extern const char MSG_FANCHECK_PRINT[];
+extern const char MSG_M112_KILL[];
 
 #if defined(__cplusplus)
 }

Firmware/temperature.cpp

@@ -879,7 +879,7 @@ static float analog2temp(int raw, uint8_t e) {
       SERIAL_ERROR_START;
       SERIAL_ERROR((int)e);
       SERIAL_ERRORLNPGM(" - Invalid extruder number !");
-      kill(PSTR(""), 6);
+      kill(NULL, 6);
       return 0.0;
   } 
   #ifdef HEATER_0_USES_MAX6675