Make more use of fpc_*_array (mainly fpc_addref_array) in rtl/inc/dynarr.inc.
[dynarr.patch](/uploads/02411d5bb65996f53e9730cada508a6a/dynarr.patch)
Since `rtl/inc/dynarr.inc` already uses `fpc_initialize_array` (as `int_InitializeArray`) and `fpc_finalize_array` (as `int_FinalizeArray`) without a second thought (proving the impossibility of a hypothetical case where element size from the array type info <> element size from the element type info), `fpc_addref_array` should also be fine. (Was going to add it to !383 but it looks too good for that...)
issue