[geary/mjog/composer-context-loading-fixes] test-client: Init icon factory so composer tests work under CI

[Michael Gratton <mjog src gnome org>]

commit ba0cf7fff1a8c3f1f942edd2081f9e165c6df264
Author: Michael Gratton <mike vee net>
Date:   Thu Aug 13 15:15:00 2020 +1000

    test-client: Init icon factory so composer tests work under CI

 test/test-client.vala | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/test/test-client.vala b/test/test-client.vala
index 5e432b709..1cdbf8f65 100644
--- a/test/test-client.vala
+++ b/test/test-client.vala
@@ -32,6 +32,7 @@ int main(string[] args) {
     Gtk.init(ref args);
     Test.init(ref args);
 
+    IconFactory.init(GLib.File.new_for_path(_SOURCE_ROOT_DIR));
     Geary.RFC822.init();
     Geary.HTML.init();
     Geary.Logging.init();