[fractal] snap: Build fix for automated build on launchpad

[Jordan Petridis <jpetridis src gnome org>]

commit 8b726672bcf52f160ee0554c8aa75a20837285c4
Author: Ken VanDine <ken vandine canonical com>
Date:   Fri Apr 17 14:41:44 2020 -0400

    snap: Build fix for automated build on launchpad

 build-aux/snap/snapcraft.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/build-aux/snap/snapcraft.yaml b/build-aux/snap/snapcraft.yaml
index b158ed74..58cdb28b 100644
--- a/build-aux/snap/snapcraft.yaml
+++ b/build-aux/snap/snapcraft.yaml
@@ -37,6 +37,7 @@ parts:
       - gtk-doc-tools
       - intltool
       - gnome-common
+      - libltdl-dev
 
   gspell:
     after: [enchant]
@@ -61,7 +62,6 @@ parts:
     after: [gspell]
     parse-info: [usr/share/metainfo/org.gnome.Fractal.appdata.xml]
     source: .
-    source-type: git
     plugin: meson
     meson-parameters: [--prefix=/usr]
     organize: