Decoder: Fixed memory overflow in shared display mode.

The factor multiplication should happen only at the source,
not at the destination.

Bug: 71375536
Test: manual
Change-Id: Ib5f00b87150a0533880346fac5464b0b1a802c36
(cherry picked from commit c3b026a87d7da17ca5196e1973137b8691e60bde)
1 file changed