FeedReader: fix build

Also fix musl by not trying to temporarily disable stdout by
replacing it with a file handle for /dev/null.

srcpkgs/FeedReader/files/fix-FeedServerMain_vala.patch

@@ -0,0 +1,23 @@
+Source: @pullmoll
+Upstream: no
+Reason: In musl libc stdin, stdout, and stderr are FILE const*
+
+The unreadCount option may print intialization messages before the
+number of unread articles. This _may_ break existing apps relying
+on the output being just one number, while I know of no such app.
+If someone knows how to temporarily disable stdout with musl libc
+please modify this patch and move it to ../patches.
+
+--- src/FeedReaderMain.vala	2019-07-13 21:09:05.000000000 +0200
++++ src/FeedReaderMain.vala	2020-04-14 01:26:11.436124423 +0200
+@@ -98,10 +98,7 @@
+
+ 		if(unreadCount)
+ 		{
+-			var old_stdout =(owned)stdout;
+-			stdout = FileStream.open("/dev/null", "w");
+ 			Logger.init(verbose);
+-			stdout =(owned)old_stdout;
+ 			stdout.printf("%u\n", DataBase.readOnly().get_unread_total());
+ 			return 0;
+ 		}

srcpkgs/FeedReader/patches/fix-FeedServer_vala-flags.patch

@@ -0,0 +1,11 @@
+--- src/Backend/FeedServer.vala	2019-07-13 21:09:05.000000000 +0200
++++ src/Backend/FeedServer.vala	2020-04-13 21:47:59.911904739 +0200
+@@ -57,7 +57,7 @@
+ 				var secrets = Secret.Collection.for_alias_sync(secret_service, Secret.COLLECTION_DEFAULT, Secret.CollectionFlags.NONE);
+ 				if(secrets == null)
+ 				{
+-					secrets = Secret.Collection.create_sync(secret_service, "Login", Secret.COLLECTION_DEFAULT, Secret.CollectionCreateFlags.COLLECTION_CREATE_NONE);
++					secrets = Secret.Collection.create_sync(secret_service, "Login", Secret.COLLECTION_DEFAULT, Secret.CollectionCreateFlags.NONE);
+ 				}
+
+ 				var settings_backend = null; // FIXME: Why does SettingsBackend.get_default() crash on Arch Linux?

srcpkgs/FeedReader/template

@@ -15,7 +15,13 @@ distfiles="https://github.com/jangernert/${pkgname}/archive/v${version}.tar.gz"
 checksum=fd10d2d2dc9c20c259d672634e5e100d10f0fb730e0687e1b3c2423224901a2c
 nocross="SQLite.vala:131.12-131.36: error: The name copy does not exist in the context of Sqlite.Value"
 
-case "$XBPS_TARGET_MACHINE" in
-	x86_64-musl) broken="https://build.voidlinux.org/builders/x86_64-musl_builder/builds/2615/steps/shell_3/logs/stdio";;
-	*-musl) broken="needs execinfo.h";;
-esac
+if [ "$XBPS_TARGET_LIBC" = "musl" ]; then
+	makedepends+=" libexecinfo-devel"
+	LDFLAGS+=" -lexecinfo"
+fi
+
+pre_configure() {
+	if [ "$XBPS_TARGET_LIBC" = "musl" ]; then
+		patch -Np0 -i ${FILESDIR}/fix-FeedServerMain_vala.patch
+	fi
+}