Update lib.rs for fix compile error

[6-sigma]

Resolves # .

@reviewer-or-team

[6-sigma]

Author: Lueey [email protected]
Date: Wed Aug 7 11:25:40 2024 +0800

bdc2b7d48ef3acbd/4a78c74/utils/wasm-instrument)
   Compiling cargo-platform v0.1.3
   Compiling dirs-sys v0.3.7
   Compiling gsys v1.4.2 (/Users/dev/.cargo/git/checkouts/gear-bdc2b7d48ef3acbd/4a78c

74/gsys)
error[E0425]: cannot find function size_of in this scope
--> gsys/src/lib.rs:205:28
|
205 | pub struct ErrorBytes([u8; size_of::()]);
| ^^^^^^^ not found in this scope
|
help: consider importing this function
|
23 + use core::mem::size_of;
|

For more information about this error, try `rustc --explain E0425`.
error: could not compile `gsys` (lib) due to 1 previous error
warning: build failed, waiting for other jobs to finish...
error: failed to compile `wasm-proc v0.1.0 (https://github.com/gear-tech/gear.git#4a7

8c740), intermediate artifacts can be found at /var/folders/fh/lsytqkf568l94lfzt_s686j0
0000gp/T/cargo-installBkFZTt`.

[StackOverflowExcept1on]

You can update to the latest stable version of the compiler. In the next release we plan to bump the minimum version of Rust to 1.81 due to stabilization of the panic_info_message.