config: use BTreeSet contains instead of iterator

Since we have an actual set type, this should be faster (although
we probably will not ever have very many names).

Signed-off-by: Paul Osborne <[email protected]>

Author: posborne

src/config.rs

@@ -184,7 +184,7 @@ impl GpioConfig {
 
     /// Get the pin with the provided name if present in this configuration
     pub fn get_pin(&self, name: &str) -> Option<&PinConfig> {
-        self.pins.iter().find(|p| p.names.iter().any(|n| n == name))
+        self.pins.iter().find(|p| p.names.contains(name))
     }
 
     /// Get a reference to all the pins in this config