get last container event

an internal change in libpod will soon required the ability to lookup
the last container event using the continer name or id and the type of
event.  this pr is in preperation for that need.

Signed-off-by: baude <bbaude@redhat.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/libpod/events/events.go b/libpod/events/events.go
index 1ec79bcd7..2bebff162 100644
--- a/libpod/events/events.go
+++ b/libpod/events/events.go
@@ -95,6 +95,8 @@ func StringToType(name string) (Type, error) {
 		return System, nil
 	case Volume.String():
 		return Volume, nil
+	case "":
+		return "", ErrEventTypeBlank
 	}
 	return "", errors.Errorf("unknown event type %q", name)
 }