[evolution-rss] Adapt to Evolution 3.37.2 EContentEditor changes

[Milan Crha <mcrha src gnome org>]

commit 0bbf522d0e096443df6387b588d7179a4a99ddb3
Author: Milan Crha <mcrha redhat com>
Date:   Tue May 5 09:36:53 2020 +0200

    Adapt to Evolution 3.37.2 EContentEditor changes

 src/rss.c | 4 ++++
 1 file changed, 4 insertions(+)
---
diff --git a/src/rss.c b/src/rss.c
index 4470336..3b2cf3b 100644
--- a/src/rss.c
+++ b/src/rss.c
@@ -1348,8 +1348,12 @@ org_gnome_evolution_presend (EPlugin *ep, EMEventTargetComposer *t)
 
        editor = e_msg_composer_get_editor (t->composer);
 #if EVOLUTION_VERSION >= 32190
+#if EVOLUTION_VERSION >= 33702
+       text = g_strdup (e_content_editor_util_get_content_data (e_msg_composer_get_content_hash 
(t->composer), E_CONTENT_EDITOR_GET_TO_SEND_HTML));
+#else
        cnt_editor = e_html_editor_get_content_editor (editor);
        text = e_content_editor_get_content (cnt_editor, E_CONTENT_EDITOR_GET_TEXT_HTML, NULL, NULL);
+#endif
 #else
        view = e_html_editor_get_view (editor);
 #if EVOLUTION_VERSION >= 31390