fix(lib): Fixed typos in multiple modules

BREAKING CHANGE: The `Preference` header had a typo in a variant and it's string representation,
  change `Preference::HandlingLeniant` to `Preference::HandlingLenient`.

src/http/buf.rs

@@ -91,7 +91,7 @@ impl MemBuf {
                 grow_zerofill(vec, needed);
             }
         } else {
-            // we need to allocate more space, but dont have unique
+            // we need to allocate more space, but don't have unique
             // access, so we need to make a new buffer
             trace!("MemBuf::reserve shared buffer, creating new");
             let mut new = MemBuf::with_capacity(needed);

src/http/conn.rs

@@ -524,7 +524,7 @@ impl<K: KeepAlive> State<K> {
 }
 
 // The DebugFrame and DebugChunk are simple Debug implementations that allow
-// us to dump the frame into logs, wihtout logging the entirety of the bytes.
+// us to dump the frame into logs, without logging the entirety of the bytes.
 struct DebugFrame<'a, T: fmt::Debug + 'a>(&'a Frame<http::MessageHead<T>, http::Chunk, ::Error>);
 
 impl<'a, T: fmt::Debug + 'a> fmt::Debug for DebugFrame<'a, T> {

src/http/h1/mod.rs

@@ -72,7 +72,7 @@ impl HttpMessage for Http11Message {
         let is_empty = !should_have_response_body(&method, raw_status.0);
         stream.get_mut().set_previous_response_expected_no_content(is_empty);
         // According to https://tools.ietf.org/html/rfc7230#section-3.3.3
-        // 1. HEAD reponses, and Status 1xx, 204, and 304 cannot have a body.
+        // 1. HEAD responses, and Status 1xx, 204, and 304 cannot have a body.
         // 2. Status 2xx to a CONNECT cannot have a body.
         // 3. Transfer-Encoding: chunked has a chunked body.
         // 4. If multiple differing Content-Length headers or invalid, close connection.
@@ -86,7 +86,7 @@ impl HttpMessage for Http11Message {
                 if codings.last() == Some(&Chunked) {
                     ChunkedReader(stream, None)
                 } else {
-                    trace!("not chuncked. read till eof");
+                    trace!("not chunked. read till eof");
                     EofReader(stream)
                 }
             } else if let Some(&ContentLength(len)) =  headers.get() {

src/http/h1/parse.rs

@@ -150,7 +150,7 @@ impl Http1Transaction for ClientTransaction {
     fn decoder(inc: &MessageHead<Self::Incoming>) -> ::Result<Decoder> {
         use ::header;
         // According to https://tools.ietf.org/html/rfc7230#section-3.3.3
-        // 1. HEAD reponses, and Status 1xx, 204, and 304 cannot have a body.
+        // 1. HEAD responses, and Status 1xx, 204, and 304 cannot have a body.
         // 2. Status 2xx to a CONNECT cannot have a body.
         //
         // First two steps taken care of before this method.
@@ -164,7 +164,7 @@ impl Http1Transaction for ClientTransaction {
             if codings.last() == Some(&header::Encoding::Chunked) {
                 Ok(Decoder::chunked())
             } else {
-                trace!("not chuncked. read till eof");
+                trace!("not chunked. read till eof");
                 Ok(Decoder::eof())
             }
         } else if let Some(&header::ContentLength(len)) = inc.headers.get() {