audio/taglib: Fix possible Ogg packet losses.

Index: Makefile
===================================================================
RCS file: /cvs/ports/audio/taglib/Makefile,v
retrieving revision 1.43
diff -u -p -u -p -r1.43 Makefile
--- Makefile 24 Oct 2018 14:27:58 -0000 1.43
+++ Makefile 20 Jun 2019 20:22:03 -0000
@@ -2,7 +2,7 @@

COMMENT= managing meta-data of audio formats
DISTNAME= taglib-1.11.1
-REVISION= 1
+REVISION= 2

CATEGORIES= audio devel

Index: patches/patch-taglib_ogg_oggfile_cpp
===================================================================
RCS file: patches/patch-taglib_ogg_oggfile_cpp
diff -N patches/patch-taglib_ogg_oggfile_cpp
--- /dev/null 1 Jan 1970 00:00:00 -0000
+++ patches/patch-taglib_ogg_oggfile_cpp 20 Jun 2019 20:22:03 -0000
@@ -0,0 +1,18 @@
+$OpenBSD$
+
+Fix possible Ogg packet losses.
+https://github.com/taglib/taglib/issues/864
+https://github.com/taglib/taglib/commit/9336c82
+
+Index: taglib/ogg/oggfile.cpp
+--- taglib/ogg/oggfile.cpp.orig
++++ taglib/ogg/oggfile.cpp
+@@ -253,7 +253,7 @@ void Ogg::File::writePacket(unsigned int i, const Byte
+ ByteVectorList packets = firstPage->packets();
+ packets[i - firstPage->firstPacketIndex()] = packet;
+
+- if(firstPage != lastPage && lastPage->packetCount() > 2) {
++ if(firstPage != lastPage && lastPage->packetCount() > 1) {
+ ByteVectorList lastPagePackets = lastPage->packets();
+ lastPagePackets.erase(lastPagePackets.begin());
+ packets.append(lastPagePackets);
The attached diff fixes this nasty issue:
https://github.com/taglib/taglib/issues/864

It is easy to reproduce, for example with audio/clementine,
see https://github.com/clementine-player/Clementine/issues/5524

ok?