build: Fix clippy errors

This patch is for fixing the following errors:

   --> src/lib.rs:359:9
    |
358 |           let mut server_version_data = Vec::new();
    |                                         ---------- help: consider replacing this with: `vec![0; server_version.header.message_size as usize - size_of::<Version>()]`
359 | /         server_version_data.resize(
360 | |             server_version.header.message_size as usize - size_of::<Version>(),
361 | |             0,
362 | |         );
    | |_________^
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#slow_vector_initialization
    = note: `-D clippy::slow-vector-initialization` implied by `-D warnings`
    = help: to override `-D warnings` add `#[allow(clippy::slow_vector_initialization)]`

Signed-off-by: Bo Chen <chen.bo@intel.com>

src/lib.rs

@@ -355,11 +355,8 @@ impl Client {
 
         debug!("Reply: {:?}", server_version);
 
-        let mut server_version_data = Vec::new();
-        server_version_data.resize(
-            server_version.header.message_size as usize - size_of::<Version>(),
-            0,
-        );
+        let mut server_version_data =
+            vec![0; server_version.header.message_size as usize - size_of::<Version>()];
         self.stream
             .read_exact(server_version_data.as_mut_slice())
             .map_err(Error::StreamRead)?;
@@ -897,8 +894,8 @@ impl Server {
                     .read_exact(&mut client_version.as_mut_slice()[size_of::<Header>()..])
                     .map_err(Error::StreamRead)?;
 
-                let mut raw_version_data = Vec::new();
-                raw_version_data.resize(header.message_size as usize - size_of::<Version>(), 0u8);
+                let mut raw_version_data =
+                    vec![0; header.message_size as usize - size_of::<Version>()];
                 stream
                     .read_exact(&mut raw_version_data)
                     .map_err(Error::StreamRead)?;