[evolution/webkit-composer] Check for empty string when setting plain text.

[Tomas Popela <tpopela src gnome org>]

commit 5f5784ce0adbc505a22a6d473336bfff7f9f9672
Author: Tomas Popela <tpopela redhat com>
Date:   Tue Apr 16 10:08:53 2013 +0200

    Check for empty string when setting plain text.

 e-util/e-editor-widget.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
---
diff --git a/e-util/e-editor-widget.c b/e-util/e-editor-widget.c
index d07bfc8..a516d67 100644
--- a/e-util/e-editor-widget.c
+++ b/e-util/e-editor-widget.c
@@ -1487,7 +1487,9 @@ e_editor_widget_set_html_mode (EEditorWidget *widget,
                gchar *plain;
 
                plain = e_editor_widget_get_text_plain (widget);
-               e_editor_widget_set_text_plain (widget, plain);
+
+               if (*plain)
+                       e_editor_widget_set_text_plain (widget, plain);
 
                g_free (plain);
        }