HPCC-2695 More clang warnings

Fixed warnings generated by Clang compiler in jlib.

Signed-off-by: Richard Chapman <rchapman@hpccsystems.com>
HPCC-2695 More clang warnings

Fixed more warnings generated by Clang compiler.

Signed-off-by: Richard Chapman <rchapman@hpccsystems.com>
HPCC-2695 More clang warnings

Fixed more warnings generated by Clang compiler.

Another attempt at a version that doesn;t cause warnings on any compiler...

Signed-off-by: Richard Chapman <rchapman@hpccsystems.com>
Merge pull request #4112 from richardkchapman/clang-warnings

Clang warnings

Reviewed-by: Gavin Halliday <ghalliday@hpccsystems.com>