Arrange that "proto_register_snmp()" be defined regardless of whether

SNMP dissection is enabled or not, so that if "register.c" was generated
by scanning a list of files that include "packet-snmp.c" even though
SNMP dissection isn't enabled (the standard "Makefile.in" and
"configure" script won't cause that to happen, but source distributions
such as BSD ports may be set up to do that), and thus includes a call to
"proto_register_snmp()", that won't cause the link to fail.

svn path=/trunk/; revision=931

packet-snmp.c

@@ -2,7 +2,7 @@
  * Routines for SNMP (simple network management protocol)
  * D.Jorand (c) 1998
  *
- * $Id: packet-snmp.c,v 1.11 1999/10/25 20:50:19 guy Exp $
+ * $Id: packet-snmp.c,v 1.12 1999/10/27 02:05:09 guy Exp $
  *
  * Ethereal - Network traffic analyzer
  * By Gerald Combs <gerald@unicom.net>
@@ -858,9 +858,19 @@ dissect_snmp(const u_char *pd, int offset, frame_data *fd, proto_tree *tree)
 	}
 }
 
+#endif /* WITH_SNMP: CMU or UCD */
+
+/*
+ * Allow the stuff that builds "register.c" to scan "packet-snmp.c" even
+ * if we're not enabling SNMP decoding (for "canned" source distributions
+ * such as BSD ports, it may be a pain to arrange that it be scanned only
+ * if SNMP is being used), by having "proto_register_snmp()" always be
+ * defined, but not do anything if SNMP decoding isn't enabled.
+ */
 void
 proto_register_snmp(void)
 {
+#if defined(WITH_SNMP_CMU) || defined(WITH_SNMP_UCD)
 /*        static hf_register_info hf[] = {
                 { &variable,
                 { "Name",           "snmp.abbreviation", TYPE, VALS_POINTER }},
@@ -869,6 +879,5 @@ proto_register_snmp(void)
 	init_mib();
         proto_snmp = proto_register_protocol("Simple Network Management Protocol", "snmp");
  /*       proto_register_field_array(proto_snmp, hf, array_length(hf));*/
-}
-
 #endif /* WITH_SNMP: CMU or UCD */
+}