6.1-3: use proper quotes for variable expansion

PKGBUILD

@@ -4,7 +4,7 @@
 
 pkgname=ncurses
 pkgver=6.1
-pkgrel=2
+pkgrel=3
 pkgdesc='System V Release 4.0 curses emulation library'
 arch=(x86_64)
 url='http://invisible-island.net/ncurses/ncurses.html'
@@ -33,7 +33,7 @@ package() {
 
   # fool packages looking to link to non-wide-character ncurses libraries
   for lib in ncurses ncurses++ form panel menu; do
-    echo 'INPUT(-l${lib}w)' > "$pkgdir/usr/lib/lib${lib}.so"
+    echo "INPUT(-l${lib}w)" > "$pkgdir/usr/lib/lib${lib}.so"
     ln -s ${lib}w.pc "$pkgdir/usr/lib/pkgconfig/${lib}.pc"
   done