MembershipType: drop warning on empty values

This is a usual situation when a membership type is undefined; and
the current code constructs _a lot_ of stub events by loading them from
empty JSON. So just silence those warnings for now.

1 files changed, 2 insertions, 1 deletions

diff --git a/lib/events/roommemberevent.cpp b/lib/events/roommemberevent.cpp
index 35cbdb3a..3193a54d 100644
--- a/lib/events/roommemberevent.cpp
+++ b/lib/events/roommemberevent.cpp
@@ -39,7 +39,8 @@ struct JsonConverter<MembershipType> {
             if (membershipString == *it)
                 return MembershipType(it - membershipStrings.begin());
 
-        qCWarning(EVENTS) << "Unknown MembershipType: " << membershipString;
+        if (!membershipString.isEmpty())
+            qCWarning(EVENTS) << "Unknown MembershipType: " << membershipString;
         return MembershipType::Undefined;
     }
 };