maintainer-feedback requested: [Bug 271320] security/libsecret: fix build with clang 16

Bugzilla Automation <bugzilla@FreeBSD.org> has asked freebsd-gnome (Nobody)
<gnome@FreeBSD.org> for maintainer-feedback:
Bug 271320: security/libsecret: fix build with clang 16
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=271320



--- Description ---
Clang 16 has a new error about incompatible function types, which shows up when
building security/libsecret:

      libsecret/test-vala-lang.p/test-vala-lang.c:1166:51: error: incompatible
function pointer types passing 'void (gpointer)' (aka 'void (void *)') to
parameter of type 'GTestDataFunc' (aka 'void (*)(const void *)')
[-Wincompatible-function-pointer-types]
	      g_test_add_data_func ("/vala/lookup/sync", NULL,
_test_lookup_sync_gtest_data_func);
							      
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      /usr/local/include/glib-2.0/glib/gtestutils.h:337:58: note: passing
argument to parameter 'test_func' here
					       GTestDataFunc   test_func);
							       ^

Since the errors all occur in vala-generated code, it does not make sense to
patch the .c files. Suppress the warning instead.