Merge #1068

1068: Add Default to some types r=Dirbaio a=mkj

These are a couple of places I've found `Default` to be handy

Co-authored-by: Matt Johnston <matt@ucc.asn.au>

embassy-sync/src/signal.rs

@@ -56,6 +56,15 @@ where
     }
 }
 
+impl<M, T> Default for Signal<M, T>
+where
+    M: RawMutex,
+{
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
 impl<M, T: Send> Signal<M, T>
 where
     M: RawMutex,

embassy-sync/src/waitqueue/waker.rs

@@ -6,7 +6,7 @@ use crate::blocking_mutex::raw::CriticalSectionRawMutex;
 use crate::blocking_mutex::Mutex;
 
 /// Utility struct to register and wake a waker.
-#[derive(Debug)]
+#[derive(Debug, Default)]
 pub struct WakerRegistration {
     waker: Option<Waker>,
 }