Handle missing NSS modules and those without callbacks.

getaddrinfo didn't update the status variable in that round of the
loop if no callback was used.
(cherry picked from commit 6573175)

ChangeLog

@@ -1,3 +1,9 @@
+2009-07-25  Ulrich Drepper  <drepper@redhat.com>
+
+	[BZ #10448]
+	* sysdeps/posix/getaddrinfo.c (gaih_inet): If NSS module contains no
+	callback we must touch the status to avoid using stale value.
+
 2009-06-16  Ulrich Drepper  <drepper@redhat.com>
 
 	* login/Makefile: Build pt_chown as PIE.

sysdeps/posix/getaddrinfo.c

@@ -833,6 +833,8 @@ gaih_inet (const char *name, const struct gaih_service *service,
 			       && inet6_status != NSS_STATUS_UNAVAIL)
 			status = inet6_status;
 		    }
+		  else
+		    status = NSS_STATUS_UNAVAIL;
 		}
 
 	      if (nss_next_action (nip, status) == NSS_ACTION_RETURN)