gst_pad_get_pad_template_caps() returns a reference which is unreferenced, so creating a copy using gst_caps_copy() results in a reference leak. Fixes https://bugzilla.gnome.org/show_bug.cgi?id=734539
gst_pad_get_pad_template_caps() returns a reference which is unreferenced, so creating a copy using gst_caps_copy() results in a reference leak. Fixes https://bugzilla.gnome.org/show_bug.cgi?id=734539