gcc 9.1 compatibility fixes

[Jikstra]

This pr backports juce-framework/JUCE@4e0adb2 to make helm compile with gcc 9.1 again.
Fixes #232

[Jacalz]

@mtytel Could you please merge this and make sure to tag a new release? The current release is totally broken on GCC 9.1 and later :(

[Jikstra]

@Jacalz as I don't have any merge rights on this repo I can't do a single thing. @mtytel has to help us with this.

[Jacalz]

@Jacalz as I don't have any merge rights on this repo I can't do a single thing. @mtytel has to help us with this.

Yes I am well aware of that. That’s why I tagged @mtytel in the comment to indicate that it was aimed at him. On a further note, I have tested this and everything seems to work as expected 👍

[Jikstra]

Oh sorry, I somehow got confused...

[simonvanderveldt]

@mtytel Any chance this could be merged? Don't want to include patches in the package for it if it's not necessary.

[dvzrv]

@mtytel Is there something keeping this patch from being merged?

Currently the package on Arch Linux is failing reproducible builds because of this.

[Skrylar]

Thank you for fixing this 👍