[gnome-contacts] Meson: make sure cheese is required when told so

[Niels De Graef <nielsdg src gnome org>]

commit fda6f14a02172bcc982bf1ecb6fea05aa20752e1
Author: Niels De Graef <nielsdegraef gmail com>
Date:   Tue Sep 12 11:51:28 2017 +0200

    Meson: make sure cheese is required when told so

 meson.build |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/meson.build b/meson.build
index d996aaa..6851dda 100644
--- a/meson.build
+++ b/meson.build
@@ -49,8 +49,9 @@ math = meson.get_compiler('c').find_library('m')
 # Options
 cheese_enabled = (get_option('with-cheese') != 'no')
 if cheese_enabled
-  cheese = dependency('cheese', required: cheese_enabled)
-  cheese_gtk = dependency('cheese-gtk', version: '>= 3.3.91', required: cheese_enabled)
+  cheese_required = (cheese_enabled == 'yes')
+  cheese = dependency('cheese', required: cheese_required)
+  cheese_gtk = dependency('cheese-gtk', version: '>= 3.3.91', required: cheese_required)
   cheese_enabled = cheese.found() and cheese_gtk.found()
 endif