[gnome-documents] Books Flatpak: Add workaround for a goa issue.

[Jordan Petridis <jpetridis src gnome org>]

commit bd0a4b34e2671c6c7ef536358f4fa66609ffc795
Author: Jordan Petridis <jordanpetridis protonmail com>
Date:   Wed Jul 25 01:57:55 2018 +0000

    Books Flatpak: Add workaround for a goa issue.
    
    gnome-online-accounts produces a ton of warnings about
    _FORTIFY_SOURCE cause the build to fail.
    
    https://gitlab.gnome.org/GNOME/gnome-online-accounts/issues/10

 flatpak/org.gnome.Books.json | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/flatpak/org.gnome.Books.json b/flatpak/org.gnome.Books.json
index 083036ac..58e61931 100644
--- a/flatpak/org.gnome.Books.json
+++ b/flatpak/org.gnome.Books.json
@@ -48,7 +48,7 @@
         },
         {
             "name": "gnome-online-accounts",
-            "config-opts": [ "--disable-telepathy", "--disable-documentation", "--disable-backend" ],
+            "config-opts": [ "--disable-telepathy", "--disable-documentation", "--disable-backend", 
"disable-Werror" ],
             "sources": [
                 {
                     "type": "git",