Use EXTRACT_8BITS() in one case.

diff --git a/print-isoclns.c b/print-isoclns.c
index c8110292a817f4c3eeb0f078002f1dc5c96c69de..cbd33a2c1b001b5eeb849a3c5e0cf8bb8cde0096 100644 (file)
--- a/print-isoclns.c
+++ b/print-isoclns.c
@@ -770,7 +770,7 @@ clnp_print(netdissect_options *ndo,
         u_int li,tlen,nsap_offset,source_address_length,dest_address_length, clnp_pdu_type, clnp_flags;
        const struct clnp_header_t *clnp_header;
        const struct clnp_segment_header_t *clnp_segment_header;
-        uint8_t rfd_error_major,rfd_error_minor;
+        uint8_t rfd_error,rfd_error_major,rfd_error_minor;
 
        clnp_header = (const struct clnp_header_t *) pptr;
         ND_TCHECK(*clnp_header);
@@ -1005,8 +1005,9 @@ clnp_print(netdissect_options *ndo,
                         ND_PRINT((ndo, ", bad opt len"));
                         return (0);
                 }
-                rfd_error_major = (*tptr&0xf0) >> 4;
-                rfd_error_minor = *tptr&0x0f;
+                rfd_error = EXTRACT_8BITS(tptr);
+                rfd_error_major = (rfd_error&0xf0) >> 4;
+                rfd_error_minor = rfd_error&0x0f;
                 ND_PRINT((ndo, "\n\t    Class: %s Error (0x%01x), %s (0x%01x)",
                        tok2str(clnp_option_rfd_class_values,"Unknown",rfd_error_major),
                        rfd_error_major,