Fix lifetime warning in newer rustc

Author: dabreegster

osm2streets/src/render/mod.rs

@@ -23,7 +23,7 @@ pub enum Filter {
 }
 
 impl Filter {
-    fn roads<'a>(&'a self, streets: &'a StreetNetwork) -> Box<dyn Iterator<Item = &Road> + 'a> {
+    fn roads<'a>(&'a self, streets: &'a StreetNetwork) -> Box<dyn Iterator<Item = &'a Road> + 'a> {
         match self {
             Filter::All => Box::new(streets.roads.values()),
             Filter::Filtered(ref roads, _) => Box::new(roads.iter().map(|r| &streets.roads[r])),
@@ -33,7 +33,7 @@ impl Filter {
     fn intersections<'a>(
         &'a self,
         streets: &'a StreetNetwork,
-    ) -> Box<dyn Iterator<Item = &Intersection> + 'a> {
+    ) -> Box<dyn Iterator<Item = &'a Intersection> + 'a> {
         match self {
             Filter::All => Box::new(streets.intersections.values()),
             Filter::Filtered(_, ref intersections) => {