sys-apps/file: fix configure w/ clang 16

Signed-off-by: Sam James <sam@gentoo.org>

sys-apps/file/file-5.43-r1.ebuild

@@ -51,6 +51,7 @@ BDEPEND+="
 PATCHES=(
 	"${FILESDIR}/file-5.39-portage-sandbox.patch" #713710 #728978
 	"${FILESDIR}/file-5.40-seccomp-fstatat64-musl.patch" #789336, not upstream yet
+	"${FILESDIR}/${P}-configure-clang16.patch"
 )
 
 src_prepare() {

sys-apps/file/files/file-5.43-configure-clang16.patch

@@ -0,0 +1,20 @@
+https://github.com/file/file/commit/4502517cc7316569d5902ab65c97b3b8e46f8a25
+https://github.com/file/file/commit/8c845b7bbad085678695d3e70467b8eec3dfa7af
+--- a/configure
++++ b/configure
+@@ -14037,13 +14037,14 @@ else $as_nop
+   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+ /* end confdefs.h.  */
+ #include <time.h>
++#include <stdlib.h>
+ int
+ main (void)
+ {
+ #if !HAVE_DECL_DAYLIGHT
+ extern int daylight;
+ #endif
+-atoi(daylight);
++daylight = atoi("1");
+   ;
+   return 0;
+ }