Comment 2 for bug 934194

StacktraceTop:
 hpaioPmlDeallocateObjects (hpaio=<optimized out>) at scan/sane/hpaio.c:602
 sane_hpaio_close (handle=0xb5f5f138) at scan/sane/hpaio.c:2432
 sane_dll_close (handle=0xb5f45de0) at dll.c:1220
 sane_close (h=0xb5f45de0) at dll-s.c:78
 scanner_close_device (self=0x8bf5eb8) at scanner.c:5346