Plantage qd on défile un peu longtemps dans la liste des fiches

Imported issue: This issue was initially reported by @gmoynard in https://gforge.inria.fr/tracker/?func=detail&aid=16747 (Additionnal comments haven't been imported and may still be there)

Si on défile vers le bas une 10zaine de fois, l'application plante systématiquement :

: E/ACRA(32053): ACRA caught a NullPointerException exception for fr.ffessm.doris.android. Building report.

: D/ACRA(32053): Looking for error files in /data/data/fr.ffessm.doris.android/files

: E/ACRA(32053): fr.ffessm.doris.android fatal error : null

: E/ACRA(32053): at fr.ffessm.doris.android.activities.ListeFicheAvecFiltre_Adapter.getView(ListeFicheAvecFiltre_Adapter.java:216)

: I/ACRA(32053): Finished class fr.ffessm.doris.android.activities.ListeFicheAvecFiltre_ClassListViewActivity

: I/WindowState(621): WIN DEATH: Window{426c20b8 fr.ffessm.doris.android/fr.ffessm.doris.android.activities.ListeFicheAvecFiltre_ClassListViewActivity paused=true}

: I/ActivityManager(621): Process fr.ffessm.doris.android (pid 32053) has died.

: W/InputDispatcher(621): channel '41d49dd0 fr.ffessm.doris.android/fr.ffessm.doris.android.activities.Accueil_CustomViewActivity (server)' ~ Consumer closed input channel or an error occurred. events=0x9

: E/InputDispatcher(621): channel '41d49dd0 fr.ffessm.doris.android/fr.ffessm.doris.android.activities.Accueil_CustomViewActivity (server)' ~ Channel is unrecoverably broken and will be disposed!

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