remove extra compater function

inbox.js

@@ -1,6 +1,17 @@
 const binarySearchInsert = require('binary-search-insert')
 const Buffer = require('safe-buffer').Buffer
 
+// decides which message to go first
+function messageArbiter (messageA, messageB) {
+  // order by number of ticks if messages have different number of ticks
+  if (messageA._fromTicks !== messageB._fromTicks) {
+    return messageA._fromTicks > messageB._fromTicks
+  } else {
+    // sender id
+    return Buffer.compare(messageA._fromId, messageB._fromId)
+  }
+}
+
 module.exports = class Inbox {
   /**
    * The inbox manages and sorts incoming messages and provides functions
@@ -132,14 +143,3 @@ module.exports = class Inbox {
     }
   }
 }
-
-// decides which message to go first
-function messageArbiter (messageA, messageB) {
-  // order by number of ticks if messages have different number of ticks
-  if (messageA._fromTicks !== messageB._fromTicks) {
-    return messageA._fromTicks > messageB._fromTicks
-  } else {
-    // sender id
-    return Buffer.compare(messageA._fromId, messageB._fromId)
-  }
-}

scheduler.js

@@ -2,6 +2,10 @@ const binarySearchInsert = require('binary-search-insert')
 const SortedMap = require('sortedmap')
 const LockMap = require('lockmap')
 
+function comparator (a, b) {
+  return a.ticks - b.ticks
+}
+
 module.exports = class Scheduler {
   /**
    * The Scheduler manages the run cycle of Actors and figures out which
@@ -11,11 +15,8 @@ module.exports = class Scheduler {
     this._waits = []
     this._running = new Set()
     this._loadingInstances = new LockMap()
+    this._checkingWaits = false
     this.instances = new SortedMap(comparator)
-
-    function comparator (a, b) {
-      return a.ticks - b.ticks
-    }
   }
 
   /**
@@ -79,10 +80,6 @@ module.exports = class Scheduler {
       })
       this._checkWaits()
     })
-
-    function comparator (a, b) {
-      return a.ticks - b.ticks
-    }
   }
 
   /**