Question about calling mem::drop() manually

[katyo]

As I see you call mem::drop to drop locking guards like here:

rquickjs/src/runtime.rs

Lines 110 to 115 in 14e5df0

	pub fn set_memory_limit(&self, limit: usize) {
	let guard = self.inner.lock();
	let limit = limit as qjs::size_t;
	unsafe { qjs::JS_SetMemoryLimit(guard.rt, limit) }
	mem::drop(guard);
	}

What the actual reason to do it in that manner?

[katyo]

If I understand correctly this helps avoid dropping guard druring ffi function call.