[scripts] cygwin also needs to be passed LIBS=-lncurses to link lxdialog successfully

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@15183 3c298f89-4303-0410-b956-a3cf2f4a3e73

scripts/config/lxdialog/Makefile

@@ -13,8 +13,9 @@ OS := $(shell uname -s)
 ifeq ($(strip $(OS)),OpenBSD)
 LIBS := -lncurses
 endif
-
-
+ifeq ($(strip $(OS)),CYGWIN_NT-5.1)
+LIBS := -lncurses
+endif
 always		:= $(hostprogs-y) dochecklxdialog
 
 %.o: %.c