core/reactor: Don't abort in allocate_aligned_buffer() on allocation failure
core/reactor: Don't abort in allocate_aligned_buffer() on allocation failure

Message-Id: <e71d9e4880394f4bb4f822b7569d8dd966ac2a06@scylladb.com>

cloudius-systems/seastar,scylladb/seastar,scylladb/seastar,cloudius-systems/seastar,kjniemi/seastar,kjniemi/seastar,dreamsxin/seastar,avikivity/seastar,dreamsxin/seastar,dreamsxin/seastar,syuu1228/seastar,avikivity/seastar,cloudius-systems/seastar,syuu1228/seastar,syuu1228/seastar,avikivity/seastar,scylladb/seastar,kjniemi/seastar