Does not compile with GCC 15’s new default -std=gnu23

[flying-sheep]

The error is in c-blosc; see Blosc/c-blosc#393

Maybe you can pass -std=gnu17 when compiling with a newer GCC?

[tacaswell]

Luckily the fix is very simple: drop the offending lines: Blosc/c-blosc#392

[tacaswell]

I'm not sure the best way to fix this on a git submodule

[tacaswell]

Upstream merged the fix.