Fix return type checks in test.

Same problem as 3dbc7a72c7e38b2a34df3a9ef496547c795420af fixed in
another test. Same solution.

Change-Id: Ib476239e567c43e4657487c34cfc7157a1f5d33f
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
V4 JIT: generate code for binary expressions.

Change-Id: If32ee3528fa0b6a2d04263d6c6abe1d34053d658
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>