[gnome-control-center] sound: Prefer symbolic icons for audio streams

[Robert Ancell <rancell src gnome org>]

commit dfd4d42fd03ba46193df6508a3b18a12a9f52009
Author: Mohammed Sadiq <sadiq sadiqpk org>
Date:   Tue Dec 31 14:42:07 2019 +0530

    sound: Prefer symbolic icons for audio streams

 panels/sound/cc-stream-row.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)
---
diff --git a/panels/sound/cc-stream-row.c b/panels/sound/cc-stream-row.c
index 4a465fdd5..f0277d1de 100644
--- a/panels/sound/cc-stream-row.c
+++ b/panels/sound/cc-stream-row.c
@@ -84,6 +84,7 @@ cc_stream_row_new (GtkSizeGroup    *size_group,
   g_autoptr(GIcon) gicon = NULL;
   const gchar *stream_name;
   const gchar *icon_name;
+  g_autofree gchar *symbolic_icon_name = NULL;
 
   self = g_object_new (CC_TYPE_STREAM_ROW, NULL);
   self->stream = g_object_ref (stream);
@@ -92,6 +93,11 @@ cc_stream_row_new (GtkSizeGroup    *size_group,
   icon_name = gvc_mixer_stream_get_icon_name (stream);
   stream_name = gvc_mixer_stream_get_name (stream);
 
+  if (g_str_has_suffix (icon_name, "-symbolic"))
+          symbolic_icon_name = strdup (icon_name);
+  else
+          symbolic_icon_name = g_strconcat (icon_name, "-symbolic", NULL);
+
   /* Explicitly lookup for the icon, since some streams may give us an
    * icon name (e.g. "audio") that doesn't really exist in the theme.
    */
@@ -101,7 +107,7 @@ cc_stream_row_new (GtkSizeGroup    *size_group,
                                           GTK_ICON_LOOKUP_GENERIC_FALLBACK);
 
   if (icon_info)
-    gicon = g_themed_icon_new_with_default_fallbacks (icon_name);
+    gicon = g_themed_icon_new_with_default_fallbacks (symbolic_icon_name);
   else if (g_str_has_prefix (stream_name, SPEECH_DISPATCHER_PREFIX))
     gicon = g_themed_icon_new_with_default_fallbacks ("preferences-desktop-accessibility-symbolic");
   else