Fix bashisms

makepngs.sh relies on a Bash feature in one of its case statements,
";;&"; this should be made explicit in the shebang.

intgamma.sh declares a function in a manner which may fail in non-Bash
sh implementations, this patch uses the correct syntax.

Based on a patch by Roflcopter4:
https://github.com/joncampbell123/dosbox-x/pull/3850

Signed-off-by: Stephen Kitt <steve@sk2.org>
2 files changed