main/clamav: force large stacks on musl

clamav assumes glibc on linux with huge stacks; but musl has smallish
default stack size similar to bsd. force clamav to manually set required
sizes to work without crashing.

main/clamav/APKBUILD

@@ -2,7 +2,7 @@
 # Maintainer: Carlo Landmeter <clandmeter@gmail.com>
 pkgname=clamav
 pkgver=0.98.4
-pkgrel=0
+pkgrel=1
 pkgusers="clamav"
 pkggroups="clamav"
 pkgdesc="An anti-virus toolkit for UNIX"
@@ -54,6 +54,7 @@ build() {
 		--with-group=clamav \
 		--with-dbdir=/var/lib/clamav \
 		--enable-clamdtop \
+		--enable-bigstack \
 		|| return 1
 	make || return 1
 }