Use more the EXTRACT_U_1() macro (44/n)

In: switch (... p[n] ...) ...

1 files changed, 1 insertions, 1 deletions

diff --git a/print-sl.c b/print-sl.c
index ed29874e..a0be3250 100644
--- a/print-sl.c
+++ b/print-sl.c
@@ -155,7 +155,7 @@ sliplink_print(netdissect_options *ndo,
 		ND_PRINT((ndo, "%02x: ", EXTRACT_U_1(p + SLX_CHDR + CHDR_LEN - 1)));
 		return;
 	}
-	switch (p[SLX_CHDR] & 0xf0) {
+	switch (EXTRACT_U_1(p + SLX_CHDR) & 0xf0) {
 
 	case TYPE_IP:
 		ND_PRINT((ndo, "ip %d: ", length + SLIP_HDRLEN));