defrag-config: fix a bug

A ptr to local var is stored in the radix tree currently,
this patch permits to alloc space to store host timeout
and thus also free it when data is removed.

src/defrag-config.c

@@ -34,19 +34,34 @@ static SCRadixTree *defrag_tree = NULL;
 
 static int default_timeout = 0;
 
-static void DefragPolicyAddHostInfo(char *host_ip_range, uint64_t *timeout)
+static void DefragPolicyFreeUserData(void *data)
 {
-    uint64_t *user_data = timeout;
+    if (data != NULL)
+        SCFree(data);
+
+    return;
+}
+
+static void DefragPolicyAddHostInfo(char *host_ip_range, uint64_t timeout)
+{
+    uint64_t *user_data = NULL;
+
+    if ( (user_data = SCMalloc(sizeof(uint64_t))) == NULL) {
+        SCLogError(SC_ERR_FATAL, "Error allocating memory. Exiting");
+        exit(EXIT_FAILURE);
+    }
+
+    *user_data = timeout;
 
     if (strchr(host_ip_range, ':') != NULL) {
         SCLogDebug("adding ipv6 host %s", host_ip_range);
-        if (SCRadixAddKeyIPV6String(host_ip_range, defrag_tree, user_data) == NULL) {
+        if (SCRadixAddKeyIPV6String(host_ip_range, defrag_tree, (void *)user_data) == NULL) {
             SCLogWarning(SC_ERR_INVALID_VALUE,
                         "failed to add ipv6 host %s", host_ip_range);
         }
     } else {
         SCLogDebug("adding ipv4 host %s", host_ip_range);
-        if (SCRadixAddKeyIPV4String(host_ip_range, defrag_tree, user_data) == NULL) {
+        if (SCRadixAddKeyIPV4String(host_ip_range, defrag_tree, (void *)user_data) == NULL) {
             SCLogWarning(SC_ERR_INVALID_VALUE,
                         "failed to add ipv4 host %s", host_ip_range);
         }
@@ -102,7 +117,7 @@ static void DefragParseParameters(ConfNode *n)
         if (strcasecmp("address", si->name) == 0) {
             ConfNode *pval;
             TAILQ_FOREACH(pval, &si->head, next) {
-                DefragPolicyAddHostInfo(pval->val, &timeout);
+                DefragPolicyAddHostInfo(pval->val, timeout);
             }
         }
     }
@@ -118,7 +133,7 @@ void DefragPolicyLoadFromConfig(void)
 {
     SCEnter();
 
-    defrag_tree = SCRadixCreateRadixTree(NULL, NULL);
+    defrag_tree = SCRadixCreateRadixTree(DefragPolicyFreeUserData, NULL);
     if (defrag_tree == NULL) {
         SCLogError(SC_ERR_MEM_ALLOC,
             "Can't alloc memory for the defrag config tree.");