vala: Don't return null if no rank attribute was found

There was already an error message introduced with
3158ae7a0f990b44f114d51498636e669609af0d

https://bugzilla.gnome.org/show_bug.cgi?id=660991

1 files changed, 1 insertions, 0 deletions

diff --git a/vala/valastruct.vala b/vala/valastruct.vala
index 23c005363..bca78510a 100644
--- a/vala/valastruct.vala
+++ b/vala/valastruct.vala
@@ -140,6 +140,7 @@ public class Vala.Struct : TypeSymbol {
 						_rank = st.rank;
 					} else {
 						Report.error (source_reference, "internal error: struct has no rank");
+						return 0;
 					}
 				}
 			}