[6/6] shlwapi/tests: Correct the prototype of the StrRetToBSTR function pointer.

[Greg Geldorp]

> From: Paul Vriens <paul.vriens.wine at gmail.com>
>
> The first thing winetest does is run a "<dll>_test.exe --list" for each 
> dll. If there is a missing export (or import library) it will not 
> include this dll in the tests (so none of the subtests will run).

Just ran shlwapi_test.exe --list manually on WVISTAADM, "The procedure entry
point StrCpyNW could not be located in the dynamic link library shell32.dll."

Ge.