user/dovecot: Fix cache flush on 32-bit big endian

They already had a workaround for 64-bit BE.  Since time_t is 64-bit on
all musl platforms, we need it active at all times.

Fixes: #966

user/dovecot/APKBUILD

@@ -33,6 +33,7 @@ subpackages="$pkgname-doc $pkgname-dev $pkgname-openrc $pkgname-lmtpd
 	"
 source="https://www.dovecot.org/releases/$_pkgvermajor/dovecot-$pkgver.tar.gz
 	https://pigeonhole.dovecot.org/releases/$_pkgvermajor/$pkgname-$_pkgvermajor-pigeonhole-$_pigeonholever.tar.gz
+	fix-time64.patch
 	skip-iconv-check.patch
 	split-protocols.patch
 	default-config.patch
@@ -260,6 +261,7 @@ _submv() {
 
 sha512sums="20c5a9cacf2c22d99d46400b666206e5b153c35286c205eec5df4d2ce0c88cf29ea15df81716794fd75837f6d67dfa4037096cf4bb66f524877a9a0a6bb282c8  dovecot-2.3.20.tar.gz
 45683e6bd678db00fc3e3c61d27a264d30d0e9aeb9ceb7ab55f94f0317d387056fa092e266062117cbe2a9dc2c90ddca03d154e78aad9c0d61fe8cf2c9187603  dovecot-2.3-pigeonhole-0.5.20.tar.gz
+a73e7323a582ea9504c33ea3591784af8187af8fffbcc47b69f549e33620c532d976853f0f7a9071af6ef2970d4899e2c5b30aac605dd5c933b3c6faa391bad4  fix-time64.patch
 fe4fbeaedb377d809f105d9dbaf7c1b961aa99f246b77189a73b491dc1ae0aa9c68678dde90420ec53ec877c08f735b42d23edb13117d7268420e001aa30967a  skip-iconv-check.patch
 794875dbf0ded1e82c5c3823660cf6996a7920079149cd8eed54231a53580d931b966dfb17185ab65e565e108545ecf6591bae82f935ab1b6ff65bb8ee93d7d5  split-protocols.patch
 0d8f89c7ba6f884719b5f9fc89e8b2efbdc3e181de308abf9b1c1b0e42282f4df72c7bf62f574686967c10a8677356560c965713b9d146e2770aab17e95bcc07  default-config.patch

user/dovecot/fix-time64.patch

+We need to case this on sizeof(time_t), not sizeof(void*).
+
+--- dovecot-2.3.20/src/lib-index/mail-cache-fields.c.old	2023-02-22 08:01:49.420556821 +0000
++++ dovecot-2.3.20/src/lib-index/mail-cache-fields.c	2023-02-23 09:45:11.417417626 +0000
+@@ -529,7 +529,7 @@
+ copy_to_buf_last_used(struct mail_cache *cache, buffer_t *dest, bool add_new)
+ {
+ 	size_t offset = offsetof(struct mail_cache_field, last_used);
+-#if defined(WORDS_BIGENDIAN) && SIZEOF_VOID_P == 8
++#if defined(WORDS_BIGENDIAN) && TIME_T_MAX_BITS > 32
+ 	/* 64bit time_t with big endian CPUs: copy the last 32 bits instead of
+ 	   the first 32 bits (that are always 0). The 32 bits are enough until
+ 	   year 2106, so we're not in a hurry to use 64 bits on disk. */