cdce: Fix a -Wunused-but-set-variable warning

(cherry picked from commit ceb246c7b2834b40812ccd03a61d8c1cab6b5ca2)

diff --git a/sys/dev/usb/net/if_cdce.c b/sys/dev/usb/net/if_cdce.c
index ebc68e1f71cc37db6c3ca54e8a8b9cc7935bf584..f3c73567b7ceec6f419b16ce66211902e7a12a22 100644 (file)
--- 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);
 }