cperciva f33a169622 Set "max" to a reasonable value if BLOCKSIZE has a bogus unit. Prior
to this commit, "env BLOCKSIZE=4X df" prints not only "4X: unknown
blocksize" as expected, but sometimes also "maximum blocksize is 1G"
and "minimum blocksize is 512" depending on what happened to be on
the stack.

Found by:	LLVM/Clang Static Checker
2008-08-04 06:53:13 +00:00
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