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Prevent panic in membership updater (#1021)
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@ -16,6 +16,7 @@ package internal
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import (
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"context"
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"errors"
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"fmt"
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"github.com/matrix-org/dendrite/roomserver/api"
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@ -106,6 +107,13 @@ func updateMembership(
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return updates, nil
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}
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if add == nil {
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// This shouldn't happen. Returning an error here is better than panicking
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// in the membership updater functions later on.
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// TODO: Why does this happen to begin with?
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return updates, errors.New("add should not be nil")
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}
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mu, err := updater.MembershipUpdater(targetUserNID)
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if err != nil {
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return nil, err
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