Fix reconstruct problems for MySQL replay

Author: wangbin579

tc_mysql_module.c

@@ -226,13 +226,20 @@ prepare_for_renew_session(tc_sess_t *s, tc_iph_t *ip, tc_tcph_t *tcp)
 
 
 static int 
-proc_when_sess_created(tc_sess_t *s, tc_iph_t *ip, tc_tcph_t *tcp)
+proc_when_sess_created(tc_sess_t *s)
 {
-    tc_mysql_session *data = (tc_mysql_session *) tc_pcalloc(s->pool, 
-            sizeof(tc_mysql_session));
+    tc_mysql_session *data = s->data;
 
-    if (data) {
-        s->data = data;
+    if (data == NULL) {
+        data = (tc_mysql_session *) tc_pcalloc(s->pool, 
+                sizeof(tc_mysql_session));
+
+        if (data) {
+            s->data = data;
+        }
+
+    } else {
+        tc_memzero(data, sizeof(tc_mysql_session));
     }
 
     return TC_OK;