busybox: fix IPv6 dependency

Commit 9f0cb135dd made BUSYBOX_CONFIG_FEATURE_IPV6 dependant on IPV6 but
did not make its default value BUSYBOX_DEFAULT_FEATURE_IPV6 dependant
on IPV6. BUSYBOX_DEFAULT_FEATURE_IPV6 will have as default value y if
IPV6 is enabled otherwise n.

Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>

package/utils/busybox/Config-defaults.in

@@ -2124,7 +2124,8 @@ config BUSYBOX_DEFAULT_WATCHDOG
 	default n
 config BUSYBOX_DEFAULT_FEATURE_IPV6
 	bool
-	default y
+	default y if IPV6
+	default n
 config BUSYBOX_DEFAULT_FEATURE_UNIX_LOCAL
 	bool
 	default n

package/utils/busybox/Makefile

@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=busybox
 PKG_VERSION:=1.29.3
-PKG_RELEASE:=2
+PKG_RELEASE:=3
 PKG_FLAGS:=essential
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.bz2