Fix a buffer overread in the recovery extension that might occur on 32-bit platforms.
FossilOrigin-Name: ff4a9a2b59657116da99c748ada19dbc64b7d0fd4c920e1c517d8bda3466f06b
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dan committed
3195b88b793a739dc6a664fa3b58a4cfeadbf350
Parent: 9d31508