RFR: CODETOOLS-7903306: Number format exception while loading the data

[Alexandre Iline]

CODETOOLS-7903306: Number format exception while loading the data

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Commit messages:
 - CODETOOLS-7903306: Number format exception while loading the data

Changes: https://git.openjdk.org/jcov/pull/23/files
 Webrev: https://webrevs.openjdk.org/?repo=jcov&pr=23&range=00
  Issue: https://bugs.openjdk.org/browse/CODETOOLS-7903306
  Stats: 22 lines in 4 files changed: 20 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jcov/pull/23.diff
  Fetch: git fetch https://git.openjdk.org/jcov pull/23/head:pull/23

PR: https://git.openjdk.org/jcov/pull/23