musl: workaround a segfault in dcngettext().

Close #12042

srcpkgs/musl/patches/mo_lookup.patch

@@ -0,0 +1,19 @@
+Do not crash with a NULL pointer dereference when dcngettext()
+is called with NULL msgid[12] arguments.
+
+Fix for https://github.com/void-linux/void-packages/issues/12042
+and probably others.
+
+	--xtraeme
+
+--- src/locale/__mo_lookup.c.orig	2019-06-26 09:55:36.843012674 +0200
++++ src/locale/__mo_lookup.c	2019-06-26 09:56:11.529443955 +0200
+@@ -13,7 +13,7 @@ const char *__mo_lookup(const void *p, s
+ 	uint32_t b = 0, n = swapc(mo[2], sw);
+ 	uint32_t o = swapc(mo[3], sw);
+ 	uint32_t t = swapc(mo[4], sw);
+-	if (n>=size/4 || o>=size-4*n || t>=size-4*n || ((o|t)%4))
++	if (!s || n>=size/4 || o>=size-4*n || t>=size-4*n || ((o|t)%4))
+ 		return 0;
+ 	o/=4;
+ 	t/=4;

srcpkgs/musl/template

@@ -1,7 +1,7 @@
 # Template file for 'musl'.
 pkgname=musl
 version=1.1.22
-revision=3
+revision=4
 archs="*-musl"
 build_style=gnu-configure
 configure_args="--prefix=/usr --disable-gcc-wrapper"