back to malloc instead of aligned_alloc for c_allocator

it seems that a 7 years old standard is still too new for the
libc variants that are ubiquitous

(tests failing on macos for not providing C11 ABI)
227ead54beAndrew Kelley committed on 2/12/2018, 8:15:12 AMparent4a4ea92
1 file changedLine totals unavailable