Fix Wasm build issues.

substrate/wasm-runtime/polkadot/src/support/proposal.rs

@@ -17,7 +17,7 @@
 //! Proposal: This describes a combination of a function ID and data that can be used to call into
 //! an internal function.
 
-use runtime_support::size_of;
+use runtime_support::{size_of, Vec};
 use slicable::Slicable;
 use joiner::Joiner;
 use streamreader::StreamReader;

substrate/wasm-runtime/support/src/lib.rs

@@ -52,7 +52,7 @@ pub fn set_storage(key: &[u8], value: &[u8]) {
 	}
 }
 
-pub fn read_storage(key: &[u8], value_offset: usize, value_out: &mut [u8]) -> usize {
+pub fn read_storage(key: &[u8], value_out: &mut [u8], value_offset: usize) -> usize {
 	unsafe {
 		ext_get_storage_into(&key[0], key.len() as u32, &mut value_out[0], value_out.len() as u32, value_offset as u32) as usize
 	}