wininet: HTTP_QUERY_RAW_HEADERS_CRLF length shouldn't include nul

Dan Kegel dank at
Wed Jul 23 18:26:32 CDT 2008

QueryHttpInfoW's reported length was off by one for
Add test to check whether HTTP_QUERY_RAW_HEADERS_CRLF
should include the terminating NUL in the reported length,
fix problem it exposed.  The code now looks more like neighboring cases.
Tested on XP.

I started looking at this because it popped up in valgrind runs
of Picasa.  It also shows up in my daily scans of the conformance test suite.

Fixes Valgrind warnings like:
 Use of uninitialised value of size 4
   at  wcstombs_sbcs (wctomb.c:187)
   by  wine_cp_wcstombs (wctomb.c:457)
   by  WideCharToMultiByte (locale.c:1936)
   by  HttpQueryInfoA (http.c:2560)
   by  HttpHeaders_test (http.c:1158)
 Uninitialised value was created by a client request
   at  mark_block_uninitialized (heap.c:164)
   by  RtlAllocateHeap (heap.c:1239)
   by  HttpQueryInfoA (http.c:2546)
   by  HttpHeaders_test (http.c:1158)

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