refactor(napi/parser): move global allocator declaration (#16237)

Pure refactor. Move `#[global_allocator]` declaration to after imports.

Author: overlookmotel

napi/parser/src/lib.rs

@@ -1,10 +1,3 @@
-#[cfg(all(
-    feature = "allocator",
-    not(any(target_arch = "arm", target_os = "freebsd", target_family = "wasm"))
-))]
-#[global_allocator]
-static ALLOC: mimalloc_safe::MiMalloc = mimalloc_safe::MiMalloc;
-
 use std::mem;
 
 use napi::{Task, bindgen_prelude::AsyncTask};
@@ -22,6 +15,13 @@ mod convert;
 mod types;
 pub use types::*;
 
+#[cfg(all(
+    feature = "allocator",
+    not(any(target_arch = "arm", target_os = "freebsd", target_family = "wasm"))
+))]
+#[global_allocator]
+static ALLOC: mimalloc_safe::MiMalloc = mimalloc_safe::MiMalloc;
+
 // Raw transfer is only supported on 64-bit little-endian systems.
 // Don't include raw transfer code on other platforms (notably WASM32).
 // `raw_transfer_types` still needs to be compiled, as `assert_layouts` refers to those types,