[totem] build: Introspection is required if requested

[Bastien Nocera <hadess src gnome org>]

commit 70db4f70a420676e79339dae56dd5a2fe73e856f
Author: Bastien Nocera <hadess hadess net>
Date:   Mon Jul 24 01:19:47 2017 +0200

    build: Introspection is required if requested
    
    Rather than always being optional.

 meson.build |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/meson.build b/meson.build
index 2da9134..c2a9998 100644
--- a/meson.build
+++ b/meson.build
@@ -181,7 +181,7 @@ have_gir = false
 
 introspection_option = get_option('enable-introspection')
 if introspection_option != 'no'
-  gir_dep = dependency('gobject-introspection-1.0', version: '>= 0.6.7', required: false)
+  gir_dep = dependency('gobject-introspection-1.0', version: '>= 0.6.7', required: (introspection_option == 
'yes'))
 
   if gir_dep.found()
     have_gir = true