BUG: Failure of custom actions is not reflected in todo.sh exit status.

No further actions are done after cleanup() calls, so the change from "exit" to "return" is safe. Further refactoring of the cleanup() calls is pending.

todo.sh

@@ -250,7 +250,7 @@ die()
 cleanup()
 {
     [ -f "$TMP_FILE" ] && rm "$TMP_FILE"
-    exit 0
+    return 0
 }
 
 cleaninput()
@@ -620,7 +620,9 @@ then
 elif [ -d "$TODO_ACTIONS_DIR" -a -x "$TODO_ACTIONS_DIR/$action" ]
 then
     "$TODO_ACTIONS_DIR/$action" "$@"
+    status=$?
     cleanup
+    exit $status
 fi
 
 ## Only run if $action isn't found in .todo.actions.d