Clippy warnings (#305)

ntex-http/src/map.rs

@@ -579,7 +579,7 @@ mod tests {
     }
 
     #[test]
-    #[allow(clippy::needless_borrow)]
+    #[allow(clippy::needless_borrow, clippy::needless_borrows_for_generic_args)]
     fn test_basics() {
         let m = HeaderMap::default();
         assert!(m.is_empty());

ntex-http/src/value.rs

@@ -85,6 +85,7 @@ impl HeaderValue {
         let mut i = 0;
         while i < bytes.len() {
             if !is_visible_ascii(bytes[i]) {
+                #[allow(clippy::out_of_bounds_indexing)]
                 ([] as [u8; 0])[0]; // Invalid header value
             }
             i += 1;