fix DIVISION_BY_ZERO.EX in pb#230
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Found by the static analyzer Svace (ISP RAS): DIVISION_BY_ZERO.EX. Variable cursorLen, whose possible value set allows a zero value at pb.go:368 by calling function 'gopkg.in/cheggaaa/pb.v1.escapeAwareRuneCountInString', is used as a denominator at pb.go:370. Variable cursorLen, whose possible value set allows a zero value at pb.go:368 by calling function 'gopkg.in/cheggaaa/pb.v1.escapeAwareRuneCountInString', is used as a denominator at pb.go:373. Variable emptyLen, whose possible value set allows a zero value at pb.go:378 by calling function 'gopkg.in/cheggaaa/pb.v1.escapeAwareRuneCountInString', is used as a denominator at pb.go:379. Signed-off-by: Petr Vaganov <petrvaganoff@gmail.com>
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Found by the static analyzer Svace (ISP RAS): DIVISION_BY_ZERO.EX.
Variable cursorLen, whose possible value set allows a zero value at pb.go:368 by calling function 'gopkg.in/cheggaaa/pb.v1.escapeAwareRuneCountInString', is used as a denominator at pb.go:370.
Variable cursorLen, whose possible value set allows a zero value at pb.go:368 by calling function 'gopkg.in/cheggaaa/pb.v1.escapeAwareRuneCountInString', is used as a denominator at pb.go:373.
Variable emptyLen, whose possible value set allows a zero value at pb.go:378 by calling function 'gopkg.in/cheggaaa/pb.v1.escapeAwareRuneCountInString', is used as a denominator at pb.go:379.