BAS: output a new line when terminating to separate the last BAS output from the NSH prompt

interpreters/bas/bas.c

@@ -2468,6 +2468,8 @@ void bas_interpreter(void)
 
 void bas_exit(void)
 {
+  /* Release resources */
+
   Auto_destroy(&g_stack);
   Global_destroy(&g_globals);
   Program_destroy(&g_program);
@@ -2477,6 +2479,10 @@ void bas_exit(void)
       g_labelstack = (struct labelstack_s *)0;
     }
 
+  /* Close files and devices.  NOTE that STDCHANNEL is also close here and
+   * can no longer be use
+   */
+
   FS_closefiles();
   FS_close(LPCHANNEL);
   FS_close(STDCHANNEL);

interpreters/bas/main.c

@@ -192,6 +192,12 @@ int bas_main(int argc, char *argv[])
       bas_interpreter();
     }
 
+  /* Terminate the output stream with a newline BEFORE closing devices */
+
+  FS_putChar(STDCHANNEL, '\n');
+
+  /* Release resouces and close files and devices */
+
   bas_exit();
-  return (0);
+  return 0;
 }