Address clippy warning for SystemDesc derive impl.

azriel91 · azriel91 · commit 891852ec2aab · 2019-08-19T11:43:11.000+12:00
diff --git a/amethyst_derive/src/system_desc.rs b/amethyst_derive/src/system_desc.rs
@@ -140,7 +140,7 @@ fn system_desc_struct(context: &Context<'_>) -> TokenStream {
     }
 }
 
-fn system_desc_fields<'ast>(ast: &'ast DeriveInput) -> SystemDescFields<'ast> {
+fn system_desc_fields(ast: &DeriveInput) -> SystemDescFields<'_> {
     // This includes any `PhantomData` fields to avoid unused type parameters.
     let fields = ast.fields();
 

Original file line number	Diff line number	Diff line change
`@@ -140,7 +140,7 @@ fn system_desc_struct(context: &Context<'_>) -> TokenStream {`
`140`	`140`	`}`
`141`	`141`	`}`
`142`	`142`
`143`		`-fn system_desc_fields<'ast>(ast: &'ast DeriveInput) -> SystemDescFields<'ast> {`
	`143`	`+fn system_desc_fields(ast: &DeriveInput) -> SystemDescFields<'_> {`
`144`	`144`	// This includes any `PhantomData` fields to avoid unused type parameters.
`145`	`145`	`let fields = ast.fields();`
`146`	`146`