Merge branch 'update-wasm' of github.com:paritytech/polkadot into update-wasm

substrate/substrate/runtime-io/with_std.rs

@@ -148,7 +148,7 @@ macro_rules! impl_stubs {
 		};
 
 		let output = $invoke(input);
-		Some($crate::codec::Slicable::to_vec(&output))
+		Some($crate::codec::Slicable::encode(&output))
 	}}
 }
 

substrate/substrate/runtime-io/without_std.rs

@@ -227,7 +227,7 @@ macro_rules! impl_stubs {
 			};
 
 			let output = ($invoke)(input);
-			let output = $crate::codec::Slicable::to_vec(&output);
+			let output = $crate::codec::Slicable::encode(&output);
 			let res = output.as_ptr() as u64 + ((output.len() as u64) << 32);
 
 			// Leak the output vector to avoid it being freed.