Fix range error handling in sgetspent.

ChangeLog

@@ -1,3 +1,8 @@
+2011-02-02  Andreas Schwab  <schwab@redhat.com>
+
+	* shadow/sgetspent.c: Check return value of __sgetspent_r instead
+	of errno.
+
 2011-01-19  Ulrich Drepper  <drepper@gmail.com>
 
 	[BZ #11724]

shadow/sgetspent.c

@@ -1,4 +1,4 @@
-/* Copyright (C) 1996, 1997 Free Software Foundation, Inc.
+/* Copyright (C) 1996, 1997, 2011 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -49,8 +49,8 @@ sgetspent (const char *string)
     }
 
   while (buffer != NULL
-	 && __sgetspent_r (string, &resbuf, buffer, buffer_size, &result) != 0
-	 && errno == ERANGE)
+	 && (__sgetspent_r (string, &resbuf, buffer, buffer_size, &result)
+	     == ERANGE))
     {
       char *new_buf;
       buffer_size += BUFLEN_SPWD;