Do not call to alloc_init twice.

It's already called in init_array, so move the call to init_array a bit earlier.
5 jobs for alloc_init_twice in 2 minutes and 13 seconds (queued for 16 seconds)
latest
Status Job ID Name Coverage
  Build
failed #30166
build:linux

00:00:54

failed #30167
build:redox

00:00:31

 
  Test
passed #30170
fmt

00:00:46

skipped #30168
test:linux
skipped #30169
allowed to fail
test:redox
 
Name Stage Failure
failed
build:redox Build

Caused by:
No such file or directory (os error 2)
make: *** [Makefile:171: "target/x86_64-unknown-redox"/release/crt0.o] Error 101
mv "target/x86_64-unknown-redox"/pthreads-emb.partial "target/x86_64-unknown-redox"/pthreads-emb
touch "target/x86_64-unknown-redox"/pthreads-emb
mv "target/x86_64-unknown-redox"/openlibm.partial "target/x86_64-unknown-redox"/openlibm
touch "target/x86_64-unknown-redox"/openlibm
ERROR: Job failed: exit code 1
failed
build:linux Build

Caused by:
failed to read `/builds/lygstate/relibc/core_io/Cargo.toml`

Caused by:
No such file or directory (os error 2)
make: *** [Makefile:171: target/release/crt0.o] Error 101
make: *** [Makefile:179: target/release/crtn.o] Error 101
ERROR: Job failed: exit code 1