Bumping clippy & fixing warnings (#1823)

* Bumping clippy

* Fixing clippy warnings

* Cargo.lock (latest nightly?)

signer/Cargo.toml

@@ -20,7 +20,7 @@ ethcore-util = { path = "../util" }
 ethcore-rpc = { path = "../rpc" }
 parity-dapps-signer = { git = "https://github.com/ethcore/parity-ui.git", version = "0.6", optional = true}
 
-clippy = { version = "0.0.79", optional = true}
+clippy = { version = "0.0.80", optional = true}
 
 [features]
 dev = ["clippy"]

signer/src/ws_server/session.rs

@@ -103,6 +103,7 @@ pub struct Session {
 }
 
 impl ws::Handler for Session {
+	#[cfg_attr(feature="dev", allow(collapsible_if))]
 	fn on_request(&mut self, req: &ws::Request) -> ws::Result<(ws::Response)> {
 		let origin = req.header("origin").or_else(|| req.header("Origin")).map(|x| &x[..]);
 		let host = req.header("host").or_else(|| req.header("Host")).map(|x| &x[..]);