wine: fix musl build.

They started using the undocumented and glibc specific ns_name_skip
function, so vendor that function in as a static function; it's luckily
simple enough.

srcpkgs/wine/patches/musl-ns_name_skip.patch

@@ -0,0 +1,48 @@
+diff --git a/dlls/dnsapi/libresolv.c b/dlls/dnsapi/libresolv.c
+index ac52147..0f8c2ef 100644
+--- wine-6.6/dlls/dnsapi/libresolv.c
++++ wine-6.6/dlls/dnsapi/libresolv.c
+@@ -57,6 +57,43 @@
+ 
+ WINE_DEFAULT_DEBUG_CHANNEL(dnsapi);
+ 
++/* code from glibc's resolv/ns_name.c, with errno setting removed */
++/*%
++ *	Advance *ptrptr to skip over the compressed name it points at.
++ *
++ * return:
++ *\li	0 on success, -1 (with errno set) on failure.
++ */
++#ifndef __GLIBC__
++static int
++ns_name_skip(const u_char **ptrptr, const u_char *eom)
++{
++	const u_char *cp;
++	u_int n;
++
++	cp = *ptrptr;
++	while (cp < eom && (n = *cp++) != 0) {
++		/* Check for indirection. */
++		switch (n & NS_CMPRSFLGS) {
++		case 0:			/*%< normal case, n == len */
++			cp += n;
++			continue;
++		case NS_CMPRSFLGS:	/*%< indirection */
++			cp++;
++			break;
++		default:		/*%< illegal type */
++			return (-1);
++		}
++		break;
++	}
++	if (cp > eom) {
++		return (-1);
++	}
++	*ptrptr = cp;
++	return (0);
++}
++#endif
++
+ static const char *debugstr_type( unsigned short type )
+ {
+     const char *str;

srcpkgs/wine/template

@@ -64,10 +64,6 @@ if [ "$XBPS_LIBC" = "glibc" ]; then
 	hostmakedepends+=" prelink"
 fi
 
-if [ "$XBPS_LIBC" = "musl" ]; then
-	broken="undefined reference to `ns_name_skip'"
-fi
-
 _wine_libexec="/usr/libexec/wine"
 nopie_files="${_wine_libexec}/wine${_wine_suffix}"