elm_fileselector: fix progressbar mode

Summary:
There are calls of elm_progressbar_pulse (start/stop pulsing), but they have
no effect because progressbar is not in pulse mode

@fix

Test Plan:
open elementary_test fileselector and navigate through folders
Wheel progressbar in right up corner should have pulse animation

Reviewers: cedric, raster, reutskiy.v.v

Subscribers: jpeg

Differential Revision: https://phab.enlightenment.org/D3843

src/lib/elementary/elc_fileselector.c

@@ -1517,6 +1517,7 @@ _elm_fileselector_evas_object_smart_add(Eo *obj, Elm_Fileselector_Data *priv)
    // spinner
    pb = elm_progressbar_add(obj);
    priv->spinner = pb;
+   elm_progressbar_pulse_set(priv->spinner, EINA_TRUE);
    elm_object_style_set(priv->spinner, "wheel");
    elm_object_part_content_set(obj, "elm.swallow.spinner", priv->spinner);