i18npool: fix cross-compilation; use INSTROOT_FOR_BUILD

Change-Id: If292f9b27ce3d3882ab541564dc0f1de200283af

i18npool/CustomTarget_localedata.mk

@@ -22,7 +22,7 @@ $(call gb_CustomTarget_get_workdir,i18npool/localedata)/localedata_$(1).cxx : \
 	$$(call gb_Output_announce,$$(subst $(WORKDIR)/,,$$@),$(true),SAX,1)
 	$$(call gb_Helper_abbreviate_dirs, \
 		$$(call gb_Helper_execute,saxparser) $(1) $$< $$@.tmp \
-			-env:LO_LIB_DIR=$(call gb_Helper_make_url,$(INSTROOT)/$(gb_PROGRAMDIRNAME)) \
+			-env:LO_LIB_DIR=$(call gb_Helper_make_url,$(INSTROOT_FOR_BUILD)/$(gb_PROGRAMDIRNAME)) \
 			-env:URE_MORE_SERVICES=$(call gb_Helper_make_url,$(call gb_Rdb_get_target_for_build,saxparser)) \
 			$(if $(findstring s,$(MAKEFLAGS)),> /dev/null 2>&1) && \
 		sed 's/\(^.*get[^;]*$$$$\)/SAL_DLLPUBLIC_EXPORT \1/' $$@.tmp > $$@ && \