libgusb: build_options_gir -> build_option_gir

srcpkgs/libgusb/template

@@ -1,7 +1,7 @@
 # Template file for 'libgusb'
 pkgname=libgusb
 version=0.3.0
-revision=1
+revision=2
 build_style=meson
 configure_args="-Ddocs=false -Dgir=$(vopt_if gir true false)
  -Dvapi=$(vopt_if vala true false)"
@@ -26,7 +26,7 @@ libgusb-devel_package() {
 	short_desc+=" - development files"
 	pkg_install() {
 		vmove usr/include
-		if [ "$build_options_gir" ]; then
+		if [ "$build_option_gir" ]; then
 			vmove usr/share
 		fi
 		vmove usr/lib/pkgconfig