[grilo-plugins] thegamesdb: Handle situation with only one result

[Bastien Nocera <hadess src gnome org>]

commit 2d1ec6776a1e1746f3c75ddaba161de755c0cdb8
Author: Exalm <exalm7659 gmail com>
Date:   Wed Apr 18 20:31:32 2018 +0500

    thegamesdb: Handle situation with only one result
    
    In that case, results_table.Data.Game would contain GameTitle, id and
    other keys directly and #results_table.Data.Game would return 0.
    
    All thegamesdb tests should pass now.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=794504

 src/lua-factory/sources/grl-thegamesdb.lua |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/src/lua-factory/sources/grl-thegamesdb.lua b/src/lua-factory/sources/grl-thegamesdb.lua
index f492f87..3d285b4 100644
--- a/src/lua-factory/sources/grl-thegamesdb.lua
+++ b/src/lua-factory/sources/grl-thegamesdb.lua
@@ -84,6 +84,10 @@ function get_id(results, title)
      not results_table.Data.Game then
     return nil
   end
+  -- If there's only a single match, just return it
+  if results_table.Data.Game.id then
+    return results_table.Data.Game.id.xml
+  end
   for index, game in pairs(results_table.Data.Game) do
     if game.GameTitle and
        string.lower(game.GameTitle.xml) == string.lower(title) then