nbd: Miscellaneous typo fixes.

Signed-off-by: Hani Benhabiles <hani@linux.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
diff --git a/nbd.c b/nbd.c
index e5084b6..e0d032c 100644
--- a/nbd.c
+++ b/nbd.c
@@ -306,7 +306,7 @@
         [ 8 ..  15]   magic        (NBD_CLIENT_MAGIC)
         [16 ..  23]   size
         [24 ..  25]   server flags (0)
-        [24 ..  27]   export flags
+        [26 ..  27]   export flags
         [28 .. 151]   reserved     (0)
 
        Negotiation header with options, part 1: