mpd: set pthread stack sizes (Alpine patch)

srcpkgs/mpd/patches/stacksize.patch

@@ -0,0 +1,19 @@
+diff --git a/src/thread/Thread.cxx b/src/thread/Thread.cxx
+index 2932d47..fd1f3ce 100644
+--- src/thread/Thread.cxx
++++ src/thread/Thread.cxx
+@@ -43,8 +43,12 @@ Thread::Start(void (*_f)(void *ctx), void *_ctx, Error &error)
+ #ifndef NDEBUG
+ 	creating = true;
+ #endif
+-
+-	int e = pthread_create(&handle, nullptr, ThreadProc, this);
++	pthread_attr_t attr, *attrptr = nullptr;
++	if ((pthread_attr_init(&attr) == 0)
++	    && (pthread_attr_setstacksize(&attr, 1024*1024) == 0)) {
++		attrptr = &attr;
++	}
++	int e = pthread_create(&handle, attrptr, ThreadProc, this);
+ 
+ 	if (e != 0) {
+ #ifndef NDEBUG

srcpkgs/mpd/template

@@ -1,7 +1,7 @@
 # Template file for 'mpd'
 pkgname=mpd
 version=0.20.1
-revision=1
+revision=2
 build_style=gnu-configure
 configure_args="--enable-opus --enable-mikmod --enable-neighbor-plugins
  --enable-soundcloud --enable-pipe-output --disable-twolame-encoder