headers: Fix wrong return type for PathQuoteSpacesA and PathQuoteSpacesW

[1] describes PathQuoteSpacesA with return type BOOL and
[2] describes PathQuoteSpacesW with return type BOOL.

Both functions are currently declared with return type void in shlwapi.h.

Fix this by using LWSTDAPI_(WINBOOL) as return type similar to the other
functions in that header.

This fixes bug report 999. See [3].

[1]: https://learn.microsoft.com/en-us/windows/win32/api/shlwapi/nf-shlwapi-pathquotespacesa
[2]: https://learn.microsoft.com/en-us/windows/win32/api/shlwapi/nf-shlwapi-pathquotespacesw
[3]: https://sourceforge.net/p/mingw-w64/bugs/999/

Fixes: 9d937a7f4f76 ("Add mingw-w64 header set as initial set.")
Signed-off-by: Daniel Starke <daniel-email@gmx.net>
Signed-off-by: LIU Hao <lh_mouse@126.com>

mingw-w64-headers/include/shlwapi.h

diff --git a/mingw-w64-headers/include/shlwapi.h b/mingw-w64-headers/include/shlwapi.h
index 131f56a..0d742c5 100644
--- a/mingw-w64-headers/include/shlwapi.h
+++ b/mingw-w64-headers/include/shlwapi.h
@@ -438,8 +438,8 @@
   LWSTDAPI_(WINBOOL) PathMatchSpecW(LPCWSTR pszFile,LPCWSTR pszSpec);
   LWSTDAPI_(int) PathParseIconLocationA(LPSTR pszIconFile);
   LWSTDAPI_(int) PathParseIconLocationW(LPWSTR pszIconFile);
-  LWSTDAPI_(void) PathQuoteSpacesA(LPSTR lpsz);
-  LWSTDAPI_(void) PathQuoteSpacesW(LPWSTR lpsz);
+  LWSTDAPI_(WINBOOL) PathQuoteSpacesA(LPSTR lpsz);
+  LWSTDAPI_(WINBOOL) PathQuoteSpacesW(LPWSTR lpsz);
   LWSTDAPI_(WINBOOL) PathRelativePathToA(LPSTR pszPath,LPCSTR pszFrom,DWORD dwAttrFrom,LPCSTR pszTo,DWORD dwAttrTo);
   LWSTDAPI_(WINBOOL) PathRelativePathToW(LPWSTR pszPath,LPCWSTR pszFrom,DWORD dwAttrFrom,LPCWSTR pszTo,DWORD dwAttrTo);
   LWSTDAPI_(void) PathRemoveArgsA(LPSTR pszPath);