video: reset button icon to inactive after video processing

In current state after video is processed and saved button has
video-recording icon, that is confusing.

The change handles exit code of movie.sh script and depending on that
notifies UI to set video-inactive icon. video-recording icon is set,
when the user press button to activate video recording.

src/main.c

@@ -1008,13 +1008,11 @@ flash_button_clicked(GtkWidget *button, gpointer user_data)
 }
 
 void
-notify_movie_progress(void)
+notify_movie_record_ready(void)
 {
-        if (!movie_start) {
-                // Recording started
-                gtk_button_set_icon_name(GTK_BUTTON(movie),
-                                         "video-recording-symbolic");
-        }
+	movie_start = 0;
+	gtk_button_set_icon_name(GTK_BUTTON(movie),
+				"video-inactive-symbolic");
 }
 
 void