recentmodel: fix possible invalid access on selection model
recentmodel: fix possible invalid access on selection model

Change-Id: I657722a1aba5894f70c0130843181a5eae726570
Tuleap: #142

savoirfairelinux/ring-lrc,savoirfairelinux/ring-lrc,savoirfairelinux/ring-lrc,savoirfairelinux/ring-lrc,savoirfairelinux/ring-lrc