Fix snprintfW Return Value

[Robert Shearman]

On Fri, 2004-07-09 at 16:26, Rob Shearman wrote:
> Hi,
> 
> At present, if the size of the buffer passed to snprintfW is too small
> then the function returns -1, as opposed to the required size of the
> buffer (as per C snprintf). This greatly limits its usefulness and can
> give incorrect results for those using the function that don't
> explicitly check for -1 being returned. A grep of the source tree shows
> that nothing depends on this behaviour.
> 
> Rob
> 
> Changelog:
> Fix snprintfW to return the required buffer size in the case of the
> actual buffer being too small

And here is a slightly better patch without the infinite loops.

Rob

Changelog:
Fix snprintfW to return the required buffer size in the case of the
Actual buffer being too small

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