mmal/deinterlace: Use default allocator for mmal pool

The port agnostic allocator helpers in mmal leak memory (see
https://github.com/raspberrypi/firmware/issues/310). As there is no benefit
using them instead of the default allocator in our case anyway, switch to the
default allocator, which avoids memory leakage on pool destruction.
Signed-off-by: Julian Scheel <julian@jusst.de>
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

modules/hw/mmal/deinterlace.c

@@ -259,10 +259,8 @@ static int Open(filter_t *filter)
         goto out;
     }
 
-    sys->output_pool = mmal_pool_create_with_allocator(sys->output->buffer_num,
-            sys->output->buffer_size, sys->output,
-            (mmal_pool_allocator_alloc_t)mmal_port_payload_alloc,
-            (mmal_pool_allocator_free_t)mmal_port_payload_free);
+    sys->output_pool = mmal_pool_create(sys->output->buffer_num,
+            sys->output->buffer_size);
     if (!sys->output_pool) {
         msg_Err(filter, "Failed to create MMAL pool for %u buffers of size %"PRIu32,
                         sys->output->buffer_num, sys->output->buffer_size);