Cleanup defrag engine on shutdown.

src/defrag.h

@@ -27,6 +27,8 @@
 typedef struct _DefragContext DefragContext;
 
 void DefragInit(void);
+void DefragDestroy(void);
+
 Packet *Defrag(ThreadVars *, DecodeThreadVars *, DefragContext *, Packet *);
 void DefragRegisterTests(void);
 

src/suricata.c

@@ -1300,6 +1300,7 @@ int main(int argc, char **argv)
     OutputDeregisterAll();
     TimeDeinit();
     SCProtoNameDeInit();
+    DefragDestroy();
 
 #ifdef PROFILING
     if (profiling_rules_enabled)