git: 97c29a1d0897 - stable/13 - cdce: Fix a -Wunused-but-set-variable warning

The branch stable/13 has been updated by markj:

URL: https://cgit.FreeBSD.org/src/commit/?id=97c29a1d0897c2ea114990e8d34cef5b8dc214f0

commit 97c29a1d0897c2ea114990e8d34cef5b8dc214f0
Author:     Mark Johnston <markj@FreeBSD.org>
AuthorDate: 2022-02-28 16:08:55 +0000
Commit:     Mark Johnston <markj@FreeBSD.org>
CommitDate: 2022-03-07 13:18:16 +0000

    cdce: Fix a -Wunused-but-set-variable warning
    
    (cherry picked from commit ceb246c7b2834b40812ccd03a61d8c1cab6b5ca2)
---
 sys/dev/usb/net/if_cdce.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/sys/dev/usb/net/if_cdce.c b/sys/dev/usb/net/if_cdce.c
index ebc68e1f71cc..f3c73567b7ce 100644
--- a/sys/dev/usb/net/if_cdce.c
+++ b/sys/dev/usb/net/if_cdce.c
@@ -974,9 +974,8 @@ static uint32_t
 cdce_m_crc32(struct mbuf *m, uint32_t src_offset, uint32_t src_len)
 {
 	uint32_t crc = 0xFFFFFFFF;
-	int error;
 
-	error = m_apply(m, src_offset, src_len, cdce_m_crc32_cb, &crc);
+	(void)m_apply(m, src_offset, src_len, cdce_m_crc32_cb, &crc);
 	return (crc ^ 0xFFFFFFFF);
 }