Fix condition of second byte of UTF-16LE/UTF-32LE.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@24023 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,8 @@
+Fri Jul 10 23:04:16 2009  NARUSE, Yui  <naruse@ruby-lang.org>
+
+	* io.c (io_strip_bom): Fix condition of second byte of
+	  UTF-16LE/UTF-32LE.
+
 Fri Jul 10 21:45:30 2009  TAKAO Kouji  <kouji@takao7.net>
 
 	* ext/readline/extconf.rb: checked rl_refresh_line in readline.

io.c

@@ -4554,7 +4554,7 @@ io_strip_bom(VALUE io)
 
       case 0xFF:
 	b2 = FIX2INT(rb_io_getbyte(io));
-	if (b2 == 0xFF) {
+	if (b2 == 0xFE) {
 	    b3 = FIX2INT(rb_io_getbyte(io));
 	    if (b3 == 0) {
 		b4 = FIX2INT(rb_io_getbyte(io));