rules/decoder: fix sid for udp.len_invalid rule

rules/decoder-events.rules

@@ -67,7 +67,7 @@ alert pkthdr any any -> any any (msg:"SURICATA TCP option invalid length"; decod
 alert pkthdr any any -> any any (msg:"SURICATA TCP duplicated option"; decode-event:tcp.opt_duplicate; classtype:protocol-command-decode; sid:2200037; rev:2;)
 alert pkthdr any any -> any any (msg:"SURICATA UDP packet too small"; decode-event:udp.pkt_too_small; classtype:protocol-command-decode; sid:2200038; rev:2;)
 alert pkthdr any any -> any any (msg:"SURICATA UDP header length too small"; decode-event:udp.hlen_too_small; classtype:protocol-command-decode; sid:2200039; rev:2;)
-alert pkthdr any any -> any any (msg:"SURICATA UDP invalid length field in the header"; decode-event:udp.len_invalid; classtype:protocol-command-decode; sid:2200220; rev:2;)
+alert pkthdr any any -> any any (msg:"SURICATA UDP invalid length field in the header"; decode-event:udp.len_invalid; classtype:protocol-command-decode; sid:2200120; rev:2;)
 alert pkthdr any any -> any any (msg:"SURICATA SLL packet too small"; decode-event:sll.pkt_too_small; classtype:protocol-command-decode; sid:2200041; rev:2;)
 alert pkthdr any any -> any any (msg:"SURICATA Ethernet packet too small"; decode-event:ethernet.pkt_too_small; classtype:protocol-command-decode; sid:2200042; rev:2;)
 alert pkthdr any any -> any any (msg:"SURICATA PPP packet too small"; decode-event:ppp.pkt_too_small; classtype:protocol-command-decode; sid:2200043; rev:2;)
@@ -150,5 +150,5 @@ alert pkthdr any any -> any any (msg:"SURICATA CHDLC packet too small"; decode-e
 
 alert pkthdr any any -> any any (msg:"SURICATA packet with too many layers"; decode-event:too_many_layers; classtype:protocol-command-decode; sid:2200116; rev:1;)
 
-# next sid is 2200120
+# next sid is 2200121