Resolve semicolon_if_nothing_returned clippy lints

    error: consider adding a `;` to the last statement for consistent formatting
       --> src/map.rs:55:9
        |
    55  |         self.map.clear()
        |         ^^^^^^^^^^^^^^^^ help: add a `;` here: `self.map.clear();`
        |
    note: the lint level is defined here
       --> src/lib.rs:304:22
        |
    304 | #![deny(clippy::all, clippy::pedantic)]
        |                      ^^^^^^^^^^^^^^^^
        = note: `#[deny(clippy::semicolon_if_nothing_returned)]` implied by `#[deny(clippy::pedantic)]`
        = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#semicolon_if_nothing_returned

    error: consider adding a `;` to the last statement for consistent formatting
       --> src/read.rs:719:9
        |
    719 |         R::discard(self)
        |         ^^^^^^^^^^^^^^^^ help: add a `;` here: `R::discard(self);`
        |
        = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#semicolon_if_nothing_returned

    error: consider adding a `;` to the last statement for consistent formatting
       --> src/read.rs:769:9
        |
    769 |         R::set_failed(self, failed)
        |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: add a `;` here: `R::set_failed(self, failed);`
        |
        = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#semicolon_if_nothing_returned

src/map.rs

@@ -52,7 +52,7 @@ impl Map<String, Value> {
     /// Clears the map, removing all values.
     #[inline]
     pub fn clear(&mut self) {
-        self.map.clear()
+        self.map.clear();
     }
 
     /// Returns a reference to the value corresponding to the key.

src/read.rs

@@ -716,7 +716,7 @@ where
     }
 
     fn discard(&mut self) {
-        R::discard(self)
+        R::discard(self);
     }
 
     fn position(&self) -> Position {
@@ -766,7 +766,7 @@ where
     const should_early_return_if_failed: bool = R::should_early_return_if_failed;
 
     fn set_failed(&mut self, failed: &mut bool) {
-        R::set_failed(self, failed)
+        R::set_failed(self, failed);
     }
 }