ProcRenderQueryPictFormats left the internal padding of xPictFormInfo (pad1)
and xPictDepth (pad1, pad2) unwritten, and ProcRenderQueryFilters left the
odd-count alias alignment slot and the filter-name alignment tail unwritten.
Both reply buffers were allocated with the non-zeroing x_rpcbuf_reserve(), so
those bytes disclosed uninitialized server heap to the client.
Use x_rpcbuf_reserve0() for both reply payloads.
Fixes: fe9fcfe98f ("render: ProcRenderQueryPictFormats(): use x_rpcbuf_t")
Fixes: 81f93d19a0 ("render: ProcRenderQueryFilters(): use x_rpcbuf_t")
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
b8929890a3