winemac: Don't query the position of the one-past-the-end character with IMR_QUERYCHARPOSITION.

[Ken Thomases]

This means the resulting rectangle will be short, but we don't have much
choice.  Some apps don't cope properly with the one-past-the-end character.
For example, Excel 2007 gets stuck in an infinite loop.
---
dlls/winemac.drv/ime.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

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