Jason R. Coombs committed 93a7647

Use the correct mode that doesn't cause characters to be inserted

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Files changed (1)


 		print("Backup already exists", file=sys.stderr)
 		raise SystemExit(1)
-	# open the file for read/write
-	with'a+b') as file:
+	# open the file for read and update (binary)
+	with'r+b') as file:
 		data =
 		assert ord(data[0xE8-0xE8]) == 0x85
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