Fix a crash that occurred when reading a imagelist with a large number
of images. In the particular case we read a cMaxImage value of 1032,
but allocated only 40 or so images. This lead to memory corruption in
ImageList_Read.  This change allows to run TntConnect.
Signed-off-by: Eberhard Beilharz <eb1@sil.org>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>