add_imap_deletion_jobs: check only for DeleteMsgOnImap jobs

Other jobs may have different meaning for foreign_id.

Also removed " \" at the end of lines.

src/job.rs

@@ -946,11 +946,12 @@ fn add_imap_deletion_jobs(context: &Context) -> sql::Result<()> {
         // Select all expired messages which don't have a
         // corresponding message deletion job yet.
         let msg_ids = context.sql.query_map(
-            "SELECT id FROM msgs \
-             WHERE timestamp < ? \
-             AND server_uid != 0 \
-             AND NOT EXISTS (SELECT 1 FROM jobs WHERE foreign_id = msgs.id)",
-            params![threshold_timestamp],
+            "SELECT id FROM msgs
+             WHERE timestamp < ?
+             AND server_uid != 0
+             AND NOT EXISTS (SELECT 1 FROM jobs WHERE foreign_id = msgs.id
+                                                      AND action = ?)",
+            params![threshold_timestamp, Action::DeleteMsgOnImap],
             |row| row.get::<_, MsgId>(0),
             |ids| {
                 ids.collect::<std::result::Result<Vec<_>, _>>()