[geary/mjog/rfc822-cleanup-part-n: 7/9] Geary.Imap.FolderSession: Tighten up preview generation error handling

[Michael Gratton <mjog src gnome org>]

commit 784bac58a121d67fce435bfc851eb11f1f6649c2
Author: Michael Gratton <mike vee net>
Date:   Tue Jun 30 14:41:30 2020 +1000

    Geary.Imap.FolderSession: Tighten up preview generation error handling

 src/engine/imap/api/imap-folder-session.vala | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)
---
diff --git a/src/engine/imap/api/imap-folder-session.vala b/src/engine/imap/api/imap-folder-session.vala
index b75552d33..af01a803b 100644
--- a/src/engine/imap/api/imap-folder-session.vala
+++ b/src/engine/imap/api/imap-folder-session.vala
@@ -1012,8 +1012,10 @@ private class Geary.Imap.FolderSession : Geary.Imap.SessionObject {
                 Geary.RFC822.Message? message = null;
                 try {
                     message = email.get_message();
-                } catch (Error e) {
-                    // Not enough fields to construct the message
+                } catch (EngineError.INCOMPLETE_MESSAGE err) {
+                    debug("Not enough fields to construct message for preview: %s", err.message);
+                } catch (GLib.Error err) {
+                    warning("Error constructing message for preview: %s", err.message);
                 }
                 if (message != null) {
                     string preview = message.get_preview();