musl libc doesn't supply any definitions for IPX, such as the SOL_IPX
macro.  However, it still provides linux/ipx.h from Linux uAPI header
files if it exists.

Linux kernel wouldn't drop linux/ipx.h from uAPI headers until 5.15,
although IPX support has already been marked obsolete since 2018.

Fix this by not defining HAS_IPX if linux/ipx.h has been included but
nothing defines the SOL_IPX macro.

Status of IPX support from other libcs are noted below:

- bionic: netipx/ipx.h does not exist.  linux/ipx.h may or may not
  exist.  Note that sys/socket.h defines SOL_IPX even if linux/ipx.h is
  missing.

- glibc: netipx/ipx.h exists.  In this case, Wine assumes IPX support
  even if the operating system does not support it in runtime.

- BSD variants: netipx/ipx.h may or may not exist.  linux/ipx.h does not
  exist.  Some BSDs supply SO_DEFAULT_HEADERS instead of SOL_IPX.

Fixes: 954bf9e0

The result of abs(INT_MIN) is INT_MIN, which breaks the ulps comparison.

Based on patch by Tim Clem.

Signed-off-by: Gabriel Ivăncescu <gabrielopcode@gmail.com>

Signed-off-by: Gabriel Ivăncescu <gabrielopcode@gmail.com>

Signed-off-by: Gabriel Ivăncescu <gabrielopcode@gmail.com>

Signed-off-by: Gabriel Ivăncescu <gabrielopcode@gmail.com>

Signed-off-by: Gabriel Ivăncescu <gabrielopcode@gmail.com>

Signed-off-by: Gabriel Ivăncescu <gabrielopcode@gmail.com>

Signed-off-by: Gabriel Ivăncescu <gabrielopcode@gmail.com>

Signed-off-by: Gabriel Ivăncescu <gabrielopcode@gmail.com>

Signed-off-by: Gabriel Ivăncescu <gabrielopcode@gmail.com>

Signed-off-by: Gabriel Ivăncescu <gabrielopcode@gmail.com>

Signed-off-by: Gabriel Ivăncescu <gabrielopcode@gmail.com>

Signed-off-by: Gabriel Ivăncescu <gabrielopcode@gmail.com>

Signed-off-by: Gabriel Ivăncescu <gabrielopcode@gmail.com>

Signed-off-by: Gabriel Ivăncescu <gabrielopcode@gmail.com>

And move the clear to the destructor.
Signed-off-by: Gabriel Ivăncescu <gabrielopcode@gmail.com>

secur32: Also copy user function tables in nego_SpInitLsaModeContext() and nego_SpAcceptLsaModeContext().

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=55378

This was removed in 14c44d0b commit.