wininet: Constify a formal parameter of CommitURLCacheEntry{A|W}() (Resend)

[Andrew Talbot]

The problem seems to be that the INTERNET_CACHE_ENTRY_INFO structure has a
member lpHeaderInfo that is a LPBYTE, but the corresponding parameter of
CommitURLCacheEntry() - sorry, I truncated its name in the original
posting - ought to be a LPTSTR. It is not yet clear to me what is required.

-- Andy.