[PATCH v4 7/8] udp: Take care of cert-int09-c clang-tidy warning for enum udp_iov_idx

[Stefano Brivio <sbrivio@redhat.com>]

/home/sbrivio/passt/udp.c:171:1: error: inital values in enum 'udp_iov_idx' are not consistent, consider explicit initialization of all, none or only the first enumerator [cert-int09-c,readability-enum-initial-value,-warnings-as-errors]
  171 | enum udp_iov_idx {
      | ^
  172 |         UDP_IOV_TAP     = 0,
  173 |         UDP_IOV_ETH     = 1,
  174 |         UDP_IOV_IP      = 2,
  175 |         UDP_IOV_PAYLOAD = 3,
  176 |         UDP_NUM_IOVS
      |
      |                      = 4

Don't initialise any value, so that it's obvious that constants map to
unique values.

Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
---
 udp.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/udp.c b/udp.c
index 100610f..0c01067 100644
--- a/udp.c
+++ b/udp.c
@@ -169,11 +169,11 @@ udp_meta[UDP_MAX_FRAMES];
  * @UDP_NUM_IOVS        the number of entries in the iovec array
  */
 enum udp_iov_idx {
-	UDP_IOV_TAP	= 0,
-	UDP_IOV_ETH	= 1,
-	UDP_IOV_IP	= 2,
-	UDP_IOV_PAYLOAD	= 3,
-	UDP_NUM_IOVS
+	UDP_IOV_TAP,
+	UDP_IOV_ETH,
+	UDP_IOV_IP,
+	UDP_IOV_PAYLOAD,
+	UDP_NUM_IOVS,
 };
 
 /* IOVs and msghdr arrays for receiving datagrams from sockets */
-- 
@@ -169,11 +169,11 @@ udp_meta[UDP_MAX_FRAMES];
  * @UDP_NUM_IOVS        the number of entries in the iovec array
  */
 enum udp_iov_idx {
-	UDP_IOV_TAP	= 0,
-	UDP_IOV_ETH	= 1,
-	UDP_IOV_IP	= 2,
-	UDP_IOV_PAYLOAD	= 3,
-	UDP_NUM_IOVS
+	UDP_IOV_TAP,
+	UDP_IOV_ETH,
+	UDP_IOV_IP,
+	UDP_IOV_PAYLOAD,
+	UDP_NUM_IOVS,
 };
 
 /* IOVs and msghdr arrays for receiving datagrams from sockets */
-- 
2.43.0