fix building against widechar-enabled ncurses

vifm/vifm.spec

@@ -46,8 +46,8 @@ Source1:      vifmrc
 #   build information
 BuildPreReq:  OpenPKG, openpkg >= 20160101
 PreReq:       OpenPKG, openpkg >= 20160101
-BuildPreReq:  file, ncurses
-PreReq:       file, ncurses
+BuildPreReq:  file, ncurses, ncurses::with_widechar = yes
+PreReq:       file, ncurses, ncurses::with_widechar = yes
 
 %description
     Vifm is a ncurses based file manager with vi like keybindings. If
@@ -77,6 +77,8 @@ PreReq:       file, ncurses
         --prefix=%{l_prefix} \
         --mandir=%{l_prefix}/man \
         --with-libmagic \
+        --with-curses=%{l_prefix} \
+        --with-curses-name=ncursesw \
         --disable-desktop-files \
         --without-gtk \
         --without-X11