pre 19.05 feedback: libc port update breaks mkfs from e2fsprogs

Hello Genodians

I'm running preparations for the transition to Genode 19.05.

mkfs.run from https://github.com/trimpim/genode/tree/test-19.05-mkfs_fails fails with the error message (KERNEL=nova): "/dev/block: Memory allocation failed while setting up superblock".

Through bisecting I determined, that the libc port update seems to be the cause of the problem.

a55af1828 last working commit dd5aa1748 .. 057a8b0b3 build fails 132ef4dcb compiles, test fails

The error occurs in line 76 in the file src/noux-pkg/e2fsprogs/lib/ext2fs/inline.c of the contrib code.

Best regards Pirmin