Explicitly call erase(), to cope with platforms where the ANSI clear

screen sequence doesn't work (like bios_console.c on some platforms).

src/hci/mucurses/wininit.c

+#include <stddef.h>
 #include <curses.h>
 
 /** @file
 	stdscr->scr->init( stdscr->scr );
 	stdscr->height = LINES;
 	stdscr->width = COLS;
+	erase();
 	return stdscr;
 }
 
  *
  */
 int endwin ( void ) {
+	attrset ( 0 );
+	color_set ( 0, NULL );
+	erase();
 	stdscr->scr->exit( stdscr->scr );
 	return OK;
 }