[gupnp-av] build: Make gtk-doc opt-in for meson

[Jens Georg <jensgeorg src gnome org>]

commit 83ef028e31ea8aae95e0dce9ac57420c27c2d133
Author: Jens Georg <mail jensge org>
Date:   Sun Nov 11 07:31:46 2018 +0100

    build: Make gtk-doc opt-in for meson

 meson_options.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/meson_options.txt b/meson_options.txt
index a15d128..e85eb18 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -1,3 +1,3 @@
 option('introspection', type : 'boolean', value : 'true', description : 'Build GObject-Introspection files')
 option('vapi', type : 'boolean', value : 'true', description : 'Build VALA API files (needs 
introspection=true)')
-option('gtk_doc', type : 'boolean', value : 'true', description : 'Generate the API documentation')
+option('gtk_doc', type : 'boolean', value : 'false', description : 'Generate the API documentation')