Akka.Coordination: minor cleanup (#5074)

Author: Aaronontheweb

src/core/Akka.Cluster/SBR/SplitBrainResolver.cs

@@ -374,6 +374,7 @@ private void OnAcquireLease()
         {
             Log.Debug("SBR trying to acquire lease");
             //implicit val ec: ExecutionContext = internalDispatcher
+            
             Strategy.Lease?.Acquire().ContinueWith(r =>
                 {
                     if (r.IsFaulted)
@@ -385,7 +386,7 @@ private void OnAcquireLease()
 
         public Receive WaitingForLease(IDecision decision)
         {
-            bool Receive(object message)
+            bool ReceiveLease(object message)
             {
                 switch (message)
                 {
@@ -426,7 +427,7 @@ bool Receive(object message)
                         }
 
                         Stash.UnstashAll();
-                        Context.Become(Receive);
+                        Context.Become(ReceiveLease);
                         return true;
 
                     case ReleaseLeaseResult lr:
@@ -441,7 +442,7 @@ bool Receive(object message)
                 }
             }
 
-            return Receive;
+            return ReceiveLease;
         }
 
         private void OnReleaseLeaseResult(bool released)

src/core/Akka.Coordination/LeaseProvider.cs

@@ -83,7 +83,7 @@ public static LeaseProvider Get(ActorSystem system)
         }
 
         private readonly ExtendedActorSystem _system;
-        private readonly ConcurrentDictionary<LeaseKey, Lease> leases = new ConcurrentDictionary<LeaseKey, Lease>();
+        private readonly ConcurrentDictionary<LeaseKey, Lease> _leases = new ConcurrentDictionary<LeaseKey, Lease>();
 
         private ILoggingAdapter _log;
 
@@ -122,7 +122,7 @@ public Lease GetLease(string leaseName, string configPath, string ownerName)
         {
             var leaseKey = new LeaseKey(leaseName, configPath, ownerName);
 
-            return leases.GetOrAdd(leaseKey, lk =>
+            return _leases.GetOrAdd(leaseKey, lk =>
             {
                 var leaseConfig = _system.Settings.Config
                     .GetConfig(configPath)
@@ -151,7 +151,7 @@ public Lease GetLease(string leaseName, string configPath, string ownerName)
                     Log.Error(
                       ex,
                       "Invalid lease configuration for leaseName [{0}], configPath [{1}] lease-class [{2}]. " +
-                      "The class must implement scaladsl.Lease or javadsl.Lease and have constructor with LeaseSettings parameter and " +
+                      "The class must implement Akka.Coordination.Lease and have constructor with LeaseSettings parameter and " +
                       "optionally ActorSystem parameter.",
                       settings.LeaseName,
                       configPath,