wasm-snip --snip-rust-panicking-code should not target std::panicking::panicking()

[nwoods-cimpress]

Motivation

std::panicking::panicking() is a simple function that checks to see if the current thread is panicking. Looking at the wasm-snip source code, it appears that this will be targeted by this pattern when --snip-rust-panicking-code is used:

options.patterns.push(r#".*std\.\.panicking\.\..*"#.into());

It is unfortunate because this function is called by std::thread::panicking(); a function extensively used by tokio

Proposed Solution

Omit this particular function from the patterns, or somehow snip this particular function to always return false