[compiler-rt] [win/asan] Improve SharedReAlloc with HEAP_REALLOC_IN_PLACE_ONLY. (PR #132558)

[via llvm-commits]

bernhardu wrote:

Just corrected the clang-format.

Another point I forgot to mention, this currently creates an issue when running with ASAN_OPTIONS containing `windows_hook_rtl_allocators=1"`, as it actually frees the memory which is attempted to be reallocated in place,
and shows a `double-free` when it gets regularly freed.
```
=================================================================
==mshtml_test.exe==1300==ERROR: AddressSanitizer: attempting double-free on 0x7f46b30bc800 in thread T-1:
    #0 0x6ffffe84b2e3 in RtlFreeHeap /home/runner/work/llvm-mingw/llvm-mingw/llvm-project/compiler-rt\lib/asan/asan_malloc_win.cpp:431:3
    #1 0x6ffff3d7323f in FreeContextBuffer .../wine/dlls/secur32/secur32.c:651:5
    #2 0x6ffffe0aede4 in netcon_secure_connect_setup .../wine/dlls/wininet/netconnection.c:484:13
    #3 0x6ffffe0ae854 in NETCON_secure_connect .../wine/dlls/wininet/netconnection.c:612:11
    #4 0x6ffffe08141d in HTTP_HttpSendRequestW .../wine/dlls/wininet/http.c:5100:23
...

0x7f46b30bc800 is located 0 bytes inside of 65536-byte region [0x7f46b30bc800,0x7f46b30cc800)
freed by thread T0 here:
    #0 0x6ffffe84ada2 in __asan::SharedReAlloc(void* (*)(void*, unsigned long, void*, unsigned long long), unsigned long long (*)(void*, unsigned long, void*), int (*)(void*, unsigned long, void*), void* (*)(void*, unsigned long, unsigned long long), void*, unsigned long, void*, unsigned long long) /home/runner/work/llvm-mingw/llvm-mingw/llvm-project/compiler-rt\lib/asan/asan_malloc_win.cpp:269:3
    #1 0x6ffffe84b174 in HeapReAlloc /home/runner/work/llvm-mingw/llvm-mingw/llvm-project/compiler-rt\lib/asan/asan_malloc_win.cpp:381:10
    #2 0x6ffff3d6f0c3 in establish_context .../wine/dlls/secur32/schannel.c:979:13
    #3 0x6ffff3d6e400 in schan_InitializeSecurityContextW .../wine/dlls/secur32/schannel.c:1043:12
    #4 0x6ffff3d7a9f6 in InitializeSecurityContextW .../wine/dlls/secur32/wrapper.c:249:19
    #5 0x6ffffe0aecae in netcon_secure_connect_setup .../wine/dlls/wininet/netconnection.c:464:14
    #6 0x6ffffe0ae854 in NETCON_secure_connect .../wine/dlls/wininet/netconnection.c:612:11
    #7 0x6ffffe08141d in HTTP_HttpSendRequestW .../wine/dlls/wininet/http.c:5100:23
...
```

CC: @zmodem, @mstorsjo, what do you think?

https://github.com/llvm/llvm-project/pull/132558