Update logic to cancel_deferred_slash (#5186)

* Update logic to cancel_deferred_slash

* More idiomatic

* bump spec

Co-authored-by: Gavin Wood <gavin@parity.io>

substrate/bin/node/runtime/src/lib.rs

@@ -82,8 +82,8 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
 	// and set impl_version to 0. If only runtime
 	// implementation changes and behavior does not, then leave spec_version as
 	// is and increment impl_version.
-	spec_version: 233,
-	impl_version: 1,
+	spec_version: 234,
+	impl_version: 0,
 	apis: RUNTIME_API_VERSIONS,
 };