[clutter-gst/clutter-gst-3.0] Need to link to gdk-pixbuf

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 57f4ffe06ebefbf894ccf5f14f114a2420dc9d79
Author: Michael Catanzaro <mcatanzaro igalia com>
Date:   Wed Feb 6 14:28:22 2019 -0600

    Need to link to gdk-pixbuf

 configure.ac | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/configure.ac b/configure.ac
index ab9dc47..4a3857e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -141,7 +141,8 @@ LT_LIB_M
 PKG_CHECK_MODULES(CLUTTER_GST,
                   [clutter-1.0 >= $CLUTTER_REQ_VERSION
                    cogl-2.0-experimental >= $COGL_REQ_VERSION
-                   gio-2.0 >= $GLIB_REQ_VERSION])
+                   gio-2.0 >= $GLIB_REQ_VERSION
+                   gdk-pixbuf-2.0])
 
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