Merge branch 'V5-9-patches'

* V5-9-patches:
  Update the parser to warn about duplicate OBJECTs, TEXTUAL-CONVENTIONs and values in enums
  snmptest: plug a possible memory leak.
  Update SNMP-TLS-TM-MIB.txt to RFC 9456 version.

Author: bvanassche

apps/snmptest.c

@@ -185,6 +185,8 @@ main(int argc, char *argv[])
                 }
             }
         }
+	if (copy)
+	    snmp_free_pdu(copy);
         copy = snmp_clone_pdu(pdu);
         if (command == SNMP_MSG_TRAP2) {
             /*

include/net-snmp/library/parse.h

@@ -54,6 +54,7 @@ SOFTWARE.
         struct enum_list *next;
         int             value;
         char           *label;
+        int             lineno;
     };
 
     /*