package/gupnp-tools: fix build with NLS

Fixes:
 - No autobuilder failures yet

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
(cherry picked from commit f8e16b6d6481ae02c88d0fcaf6fe73efc21bc93a)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/gupnp-tools/gupnp-tools.mk

@@ -19,7 +19,10 @@ GUPNP_TOOLS_DEPENDENCIES = \
 	gssdp \
 	gupnp \
 	libsoup \
-	libgtk3
+	libgtk3 \
+	$(TARGET_NLS_DEPENDENCIES)
+
+GUPNP_TOOLS_CONF_ENV = LIBS=$(TARGET_NLS_LIBS)
 
 ifeq ($(BR2_PACKAGE_GUPNP_AV),y)
 GUPNP_TOOLS_CONF_OPTS += --with-av