[PULL 1/8] nbd: silence maybe-uninitialized warnings

[Eric Blake]

From: Christian Borntraeger <borntraeger@de.ibm.com>

gcc 10 from Fedora 32 gives me:

Compiling C object libblock.fa.p/nbd_server.c.o
../nbd/server.c: In function ‘nbd_co_client_start’:
../nbd/server.c:625:14: error: ‘namelen’ may be used uninitialized in this 
function [-Werror=maybe-uninitialized]
  625 |         rc = nbd_negotiate_send_info(client, NBD_INFO_NAME, namelen, 
name,
      |              
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  626 |                                      errp);
      |                                      ~~~~~
../nbd/server.c:564:14: note: ‘namelen’ was declared here
  564 |     uint32_t namelen;
      |              ^~~~~~~
cc1: all warnings being treated as errors

As I cannot see how this can happen, let uns silence the warning.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Message-Id: <20200930155859.303148-3-borntraeger@de.ibm.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
---
 nbd/server.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/nbd/server.c b/nbd/server.c
index f74766add7b7..f25cffa334fa 100644
--- a/nbd/server.c
+++ b/nbd/server.c
@@ -556,7 +556,7 @@ static int nbd_negotiate_handle_info(NBDClient *client, 
Error **errp)
     NBDExport *exp;
     uint16_t requests;
     uint16_t request;
-    uint32_t namelen;
+    uint32_t namelen = 0;
     bool sendname = false;
     bool blocksize = false;
     uint32_t sizes[3];
-- 
2.28.0