Fix some linter errors

nom-training/src/lib.rs

@@ -36,7 +36,7 @@ where
 fn parse_container_c<'a, E: ParseError<&'a str>>(
     parser: impl Parser<&'a str, i32, E>,
 ) -> impl Parser<&'a str, Container, E> {
-    parser.map(|val| Container(val))
+    parser.map(Container)
 }
 
 /*
@@ -54,7 +54,7 @@ fn parse_container_d<'a, E: ParseError<&'a str>>(
 fn parse_container_e<'a, E: ParseError<&'a str>>(
     parser: impl Parser<&'a str, i32, E>,
 ) -> impl Parser<&'a str, Container, E> {
-    let mut parser = parser.map(|val| Container(val));
+    let mut parser = parser.map(Container);
 
     move |input| parser.parse(input)
 }