10.2-integration fixes:

- always send COM_STMT_RESET if specified
- prevent double free of context buffer

libmariadb/ma_net.c

@@ -101,9 +101,11 @@ static int ma_net_write_buff(NET *net,const char *packet, size_t len);
 
 int ma_net_init(NET *net, MARIADB_PVIO* pvio)
 {
-  if (!(net->buff=(uchar*) calloc(1, net_buffer_length)))
+  if (!(net->buff=(uchar*) malloc(net_buffer_length)))
     return 1;
 
+  memset(net->buff, 0, net_buffer_length);
+
   if (!net->extension)
   {
     printf("Fatal\n");

libmariadb/mariadb_lib.c

@@ -1516,8 +1516,6 @@ error:
   end_server(mysql);
   /* only free the allocated memory, user needs to call mysql_close */
   mysql_close_memory(mysql);
-  if (!(((ulong) client_flag) & CLIENT_REMEMBER_OPTIONS))
-    mysql_close_options(mysql);
   return(0);
 }
 
@@ -1786,10 +1784,11 @@ static void mysql_close_options(MYSQL *mysql)
   if (mysql->options.extension)
   {
     struct mysql_async_context *ctxt;
-    if ((ctxt = mysql->options.extension->async_context) != 0)
+    if ((ctxt = mysql->options.extension->async_context))
     {
       my_context_destroy(&ctxt->async_context);
       free(ctxt);
+      mysql->options.extension->async_context= 0;
     }
     free(mysql->options.extension->plugin_dir);
     free(mysql->options.extension->default_auth);

libmariadb/mariadb_stmt.c

@@ -1687,7 +1687,6 @@ static my_bool madb_reset_stmt(MYSQL_STMT *stmt, unsigned int flags)
       } 
     }
 
-
     if (flags & MADB_RESET_SERVER)
     {
       /* reset statement on server side */
@@ -1760,7 +1759,6 @@ static my_bool mysql_stmt_internal_reset(MYSQL_STMT *stmt, my_bool is_close)
         stmt->mysql->status= MYSQL_STATUS_READY;
       } 
     }
-    if (!stmt->execute_count)
     if (!is_close)
       ret= madb_reset_stmt(stmt, MADB_RESET_SERVER);
   }