[PATCH 0/1] MR8178: user32: Fix the number of characters processed by DrawTextExW.

[JiangYi Chen (＠meshine)]

@alexhenrie @zhiyi

Description:
    When flags does not include DT_CALCRECT, since len is calculated in the middle,
    it will be reduced to zero. Resulting in the length of the processed string that
    is finally returned to zero and the non-processing string length is unchanged.
    But some application taking the non-processing string length to zero as the loop
    end condition.

The test case's merge request number is 8177.

Signed-off-by: chenjiangyi