(__cmsg_nxthdr): "return 0" instead of "return NULL" to make C++ happy.

diff --git a/sysdeps/unix/sysv/linux/bits/socket.h b/sysdeps/unix/sysv/linux/bits/socket.h
index 0a93a42f351fd48c50e2c80180059c866cd5bb09..056087b2f78fe2dd7440f079257bcab7065a5fe0 100644 (file)
--- a/sysdeps/unix/sysv/linux/bits/socket.h
+++ b/sysdeps/unix/sysv/linux/bits/socket.h
@@ -255,7 +255,7 @@ __cmsg_nxthdr (struct msghdr *__mhdr, struct cmsghdr *__cmsg) __THROW
 {
   if ((size_t) __cmsg->cmsg_len < sizeof (struct cmsghdr))
     /* The kernel header does this so there may be a reason.  */
-    return NULL;
+    return 0;
 
   __cmsg = (struct cmsghdr *) ((unsigned char *) __cmsg
                               + CMSG_ALIGN (__cmsg->cmsg_len));
@@ -264,7 +264,7 @@ __cmsg_nxthdr (struct msghdr *__mhdr, struct cmsghdr *__cmsg) __THROW
       || ((unsigned char *) __cmsg + CMSG_ALIGN (__cmsg->cmsg_len)
          >= ((unsigned char *) __mhdr->msg_control + __mhdr->msg_controllen)))
     /* No more entries.  */
-    return NULL;
+    return 0;
   return __cmsg;
 }
 #endif /* Use `extern inline'.  */