display: don't let a message write over the second help line

When suspending nano on a Linux console (or FreeBSD console), the
helpful message about using the 'fg' command overwrote the start
of the second help line, kind of hiding the message.  So, output
a double newline before the message to make it stand out.

Also, drop a pointless cursor movement, as endwin() determines
the placement of the cursor all by itself.

src/nano.c

@@ -1210,12 +1210,11 @@ RETSIGTYPE do_suspend(int signal)
 #ifdef ENABLE_MOUSE
 	disable_mouse_support();
 #endif
-
-	/* Move the cursor to the last line of the screen. */
-	move(LINES - 1, 0);
 	curs_set(1);
 	endwin();
 
+	printf("\n\n");
+
 	/* Display our helpful message. */
 	printf(_("Use \"fg\" to return to nano.\n"));
 	fflush(stdout);