fix clippy warnings

src/bindings.rs

@@ -638,6 +638,7 @@ fn generate_random_number<R: rand::Rng>(
     if args.is_empty() {
         Ok(rand.gen::<LuaNumber>())
     } else if args.len() == 1 {
+        #[allow(clippy::get_first)]
         let max = args.get(0).unwrap().as_integer();
         if let Some(max) = max {
             if max >= 1 {
@@ -660,6 +661,7 @@ fn generate_random_number<R: rand::Rng>(
             ))
         }
     } else if args.len() == 2 {
+        #[allow(clippy::get_first)]
         let min = args.get(0).unwrap().as_integer();
         let max = args.get(1).unwrap().as_integer();
         if let Some(min) = min {

src/bindings/callback.rs

@@ -303,7 +303,7 @@ impl LuaCallback {
             let result = self
                 .function
                 .call::<LuaValue>((&self.context, arg.clone()))?;
-            if let Some(inner_function) = result.as_function().cloned().map(|f| f) {
+            if let Some(inner_function) = result.as_function().cloned() {
                 // function returned a function -> is a generator. use the inner function instead.
                 let environment = self.function.environment();
                 self.environment = environment;

src/bindings/unwrap.rs

@@ -111,7 +111,7 @@ pub(crate) fn string_from_value(
     arg_index: usize,
 ) -> LuaResult<String> {
     if let Some(string) = value.as_string_lossy() {
-        Ok(string.into())
+        Ok(string)
     } else {
         Err(bad_argument_error(
             function,
@@ -130,7 +130,7 @@ pub(crate) fn optional_string_from_value(
     arg_index: usize,
 ) -> LuaResult<String> {
     if let Some(string) = value.as_string_lossy() {
-        Ok(string.into())
+        Ok(string)
     } else if value.is_nil() {
         Ok(String::new())
     } else {