f89f16846e depends: Fix compiling `libevent` package on NetBSD (Hennadii Stepanov)
Pull request description:
Libevent [introduced](https://github.com/libevent/libevent/pull/909) the [`typeof`](https://gcc.gnu.org/onlinedocs/gcc/Typeof.html) C language extension in the NetBSD-specific code, which was pulled into our depends in https://github.com/bitcoin/bitcoin/pull/21991.
However, GCC [states](https://gcc.gnu.org/onlinedocs/gcc/Alternate-Keywords.html):
> the various `-std` options disable certain keywords.
Due to our use of b042c4f053/depends/hosts/netbsd.mk (L1)
the `typeof` keyword is disabled, resulting in a compilation error:
```
$ gmake -C depends libevent CC=/usr/pkg/gcc14/bin/gcc CXX=/usr/pkg/gcc14/bin/g++
<snip>
[ 37%] Building C object CMakeFiles/event_core_static.dir/kqueue.c.o
/home/hebasto/dev/bitcoin/depends/work/build/x86_64-unknown-netbsd10.0/libevent/2.1.12-stable-ca6b96ec97c/kqueue.c: In function 'kq_setup_kevent':
/home/hebasto/dev/bitcoin/depends/work/build/x86_64-unknown-netbsd10.0/libevent/2.1.12-stable-ca6b96ec97c/kqueue.c:56:27: error: implicit declaration of function 'typeof' [-Wimplicit-function-declaration]
56 | #define INT_TO_UDATA(x) ((typeof(((struct kevent *)0)->udata))(intptr_t)(x))
| ^~~~~~
/home/hebasto/dev/bitcoin/depends/work/build/x86_64-unknown-netbsd10.0/libevent/2.1.12-stable-ca6b96ec97c/kqueue.c:190:30: note: in expansion of macro 'INT_TO_UDATA'
190 | out->udata = INT_TO_UDATA(ADD_UDATA);
| ^~~~~~~~~~~~
/home/hebasto/dev/bitcoin/depends/work/build/x86_64-unknown-netbsd10.0/libevent/2.1.12-stable-ca6b96ec97c/kqueue.c:56:64: error: expected expression before 'intptr_t'
56 | #define INT_TO_UDATA(x) ((typeof(((struct kevent *)0)->udata))(intptr_t)(x))
| ^~~~~~~~
/home/hebasto/dev/bitcoin/depends/work/build/x86_64-unknown-netbsd10.0/libevent/2.1.12-stable-ca6b96ec97c/kqueue.c:190:30: note: in expansion of macro 'INT_TO_UDATA'
190 | out->udata = INT_TO_UDATA(ADD_UDATA);
| ^~~~~~~~~~~~
/home/hebasto/dev/bitcoin/depends/work/build/x86_64-unknown-netbsd10.0/libevent/2.1.12-stable-ca6b96ec97c/kqueue.c:56:27: error: called object is not a function or function pointer
56 | #define INT_TO_UDATA(x) ((typeof(((struct kevent *)0)->udata))(intptr_t)(x))
| ~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/hebasto/dev/bitcoin/depends/work/build/x86_64-unknown-netbsd10.0/libevent/2.1.12-stable-ca6b96ec97c/kqueue.c:190:30: note: in expansion of macro 'INT_TO_UDATA'
190 | out->udata = INT_TO_UDATA(ADD_UDATA);
| ^~~~~~~~~~~~
gmake[3]: *** [CMakeFiles/event_core_static.dir/build.make:328: CMakeFiles/event_core_static.dir/kqueue.c.o] Error 1
<snip>
```
This PR resolves this issue by following GCC's [recommendation](https://gcc.gnu.org/onlinedocs/gcc/Typeof.html):
> write `__typeof__` instead of `typeof`.
ACKs for top commit:
fanquake:
ACK f89f16846e
Tree-SHA512: c0d2e535408db120535781f8518c616b0f5a39b1c6babb2a74e8e0565348aaf00b0f5a93cac0af7cf6d6bf028d5d58763fe71b3969ed9c7059fa7c3dca9d084c
713bf66b1f