verify_signature: Invalid Public key should not be mapped as InvalidSignature

[stevefan1999-personal]

rustls-rustcrypto/src/verify/rsa.rs

Line 37 in e6d5ed9

let public_key = RsaPublicKey::from_pkcs1_der(public_key).map_err(|_| InvalidSignature)?;

[stevefan1999-personal]

Same goes for

rustls-rustcrypto/src/verify/rsa.rs

Lines 39 to 41 in e6d5ed9

	<$verifying_key>::new(public_key)
	.verify(message, &signature)
	.map_err(|_| InvalidSignature)

But on a different context. I'm too lazy to find the correct error type though.