Update stdarch/dlmalloc

Ensure that they compile with the now-a-feature-is-required logic.

Author: alexcrichton

Cargo.lock

@@ -1028,9 +1028,9 @@ dependencies = [
 
 [[package]]
 name = "dlmalloc"
-version = "0.2.2"
+version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "96d075454d918d7358fcd2290dcb4c3ae7bc735388dd1b31ccee1426c1106d8a"
+checksum = "a6fe28e0bf9357092740362502f5cc7955d8dc125ebda71dec72336c2e15c62e"
 dependencies = [
  "compiler_builtins",
  "libc",

library/std/Cargo.toml

@@ -36,7 +36,7 @@ features = ['read_core', 'elf', 'macho', 'pe', 'unaligned', 'archive']
 rand = "0.7"
 
 [target.'cfg(any(all(target_family = "wasm", not(target_os = "emscripten")), all(target_vendor = "fortanix", target_env = "sgx")))'.dependencies]
-dlmalloc = { version = "0.2.2", features = ['rustc-dep-of-std'] }
+dlmalloc = { version = "0.2.3", features = ['rustc-dep-of-std'] }
 
 [target.x86_64-fortanix-unknown-sgx.dependencies]
 fortanix-sgx-abi = { version = "0.3.2", features = ['rustc-dep-of-std'] }