operation_name not being set in juniper_hyper library

[FrankReh]

Describe the bug
The code block

juniper/juniper_hyper/src/lib.rs

Lines 225 to 229 in a648dd7

	"operationName" => {
	if operation_name.is_some() {
	return Err(invalid_err("operationName"));
	}
	}

seems to be missing a statement where operation_name would be set to Some(value).

To Reproduce
Steps to reproduce the behavior:
Just read through code. See the variable is defined a None and nowhere is being set.

[LegNeato]

You're right, looks like a bug / omission. Can you put up a PR with a test?

[FrankReh]

Sorry. I've lost the context for this repo. It's been too long. We can close it if this doesn't bother anyone else.