UDP: inspection app layer state as soon as we have it.

src/detect.c

@@ -1242,7 +1242,7 @@ int SigMatchSignatures(ThreadVars *th_v, DetectEngineCtx *de_ctx, DetectEngineTh
             /* Retrieve the app layer state and protocol and the tcp reassembled
              * stream chunks. */
             if ((p->proto == IPPROTO_TCP && (p->flags & PKT_STREAM_EST)) ||
-                (p->proto == IPPROTO_UDP && (p->flowflags & FLOW_PKT_ESTABLISHED)) ||
+                (p->proto == IPPROTO_UDP) ||
                 (p->proto == IPPROTO_SCTP && (p->flowflags & FLOW_PKT_ESTABLISHED)))
             {
                 alstate = AppLayerGetProtoStateFromPacket(p);