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Merge bitcoin/bitcoin#30327: build: Drop redundant sys/sysctl.h header check

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c0b5ea5901 build: Drop redundant `sys/sysctl.h` header check (Hennadii Stepanov)

Pull request description:

  The `AC_CHECK_HEADERS` macro defines `HAVE_SYS_SYSCTL_H` if the `sys/sysctl.h` header is found. However, in the source code, this header is guarded by `HAVE_SYSCTL` and `HAVE_SYSCTL_ARND` macros, which have their own checks. Since `HAVE_SYS_SYSCTL_H` is not used, we can skip the `AC_CHECK_HEADERS(... sys/sysctl.h ...)` check.

ACKs for top commit:
  laanwj:
    ACK c0b5ea5901
  fanquake:
    ACK c0b5ea5901 - we could got the other way, and add nested #defs, but that doesn't seem worthwhile.

Tree-SHA512: 73bc4bbfc5c457cd2c38e40f8e57d2a70c06ef661d76d4148d683d262be45b9405b8cda1958ac611c312ca7d9e2f9624cf2cac1b61f1008af0856875c62f0eac
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merge-script 2024-06-26 15:25:46 +01:00
commit d3d2bbf576
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configure.ac
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@ -897,7 +897,7 @@ if test "$TARGET_OS" = "darwin"; then
AX_CHECK_LINK_FLAG([-Wl,-fixup_chains], [HARDENED_LDFLAGS="$HARDENED_LDFLAGS -Wl,-fixup_chains"], [], [$LDFLAG_WERROR])
fi
AC_CHECK_HEADERS([sys/select.h sys/prctl.h sys/sysctl.h vm/vm_param.h sys/vmmeter.h sys/resources.h])
AC_CHECK_HEADERS([sys/select.h sys/prctl.h vm/vm_param.h sys/vmmeter.h sys/resources.h])
AC_CHECK_DECLS([getifaddrs, freeifaddrs],[CHECK_SOCKET],,
[#include <sys/types.h>