minor changes to knetfile: invalid fd equals -1 rather than 0
minor changes to knetfile: invalid fd equals -1 rather than 0


git-svn-id: ba63ac760bf0f03e6bf5520b5300f1a364b8a096@366 fd675618-d7d1-4fc3-a54f-e58cce934862

pjotrp/samtools,pjotrp/samtools,pjotrp/samtools