fopen(TTY...) to bb_xfopen(), close bug 600
diff --git a/miscutils/less.c b/miscutils/less.c
index 189b886..0b0dc0c 100644
--- a/miscutils/less.c
+++ b/miscutils/less.c
@@ -238,7 +238,7 @@
 	fclose(fp);
 
 	if(inp == NULL)
-		inp = (inp_stdin) ? fopen(CURRENT_TTY, "r") : stdin;
+		inp = (inp_stdin) ? bb_xfopen(CURRENT_TTY, "r") : stdin;
 
 	if (flags & FLAG_N)
 		add_linenumbers();