libnova: Fix implicit declaration of alloca(3).

Author: alarixnia

geography/libnova/distinfo

@@ -4,3 +4,4 @@ BLAKE2s (libnova-0.15.0.tar.gz) = ec96b7b6ee6d6bcbc72657722bf7f66ff3e180fe1c0bc1
 SHA512 (libnova-0.15.0.tar.gz) = 77ab0ccbfe462c03a21e88656cb4d6389994ea1da0ee8da997f19a83d24ad8fd9e505e70e1580b75332e826e5b7859b5f2af4417f65eb811440493ba586f2574
 Size (libnova-0.15.0.tar.gz) = 1533794 bytes
 SHA1 (patch-src_julian__day.c) = 94114ed1e49a2a4eb426cdda33ed4290c362fd6d
+SHA1 (patch-src_utility.c) = b85f90c462520c32c649af3cef9b700d18de6a09

geography/libnova/patches/patch-src_utility.c

@@ -0,0 +1,17 @@
+$NetBSD$
+
+Fix implicit declaration of alloca(3).
+
+--- src/utility.c.orig	2025-12-20 12:23:08.178327108 +0000
++++ src/utility.c
+@@ -44,6 +44,10 @@
+ #include <ctype.h>
+ #include <libnova/libnova.h>
+ 
++#if defined(__linux__) || defined(__sun)
++#include <alloca.h>
++#endif
++
+ #ifndef __APPLE__
+ #include <malloc.h>
+ #endif