cleanup; remove unneded callback

src/app/debugger/debuggerUI/VmDebugger.js

@@ -115,9 +115,8 @@ class VmDebuggerLogic {
 
       self._traceManager.getCurrentCalledAddressAt(index, (error, address) => {
         if (error) return
-        if (!self.storageResolver){
+        if (!self.storageResolver) return
-          return;
+
-        }
         var storageViewer = new StorageViewer({ stepIndex: self._parentUI.currentStepIndex, tx: self._parentUI.tx, address: address }, self.storageResolver, self._traceManager)
 
         storageViewer.storageRange((error, storage) => {
@@ -150,7 +149,6 @@ class VmDebuggerLogic {
       self._traceManager.getRemainingGas(index, function (error, remaining) {
         self.event.trigger('traceRemainingGasUpdate', [error, remaining])
       })
-
     })
   }
 
@@ -183,12 +181,8 @@ function VmDebugger (_parentUI, _traceManager, _codeManager, _solidityProxy, _ca
   this.vmDebuggerLogic.event.register('traceManagerStorageUpdate', this.storagePanel.update.bind(this.storagePanel))
 
   this.stepDetail = new StepDetail()
-  _parentUI.debugger.event.register('traceUnloaded', this, function () {
+  _parentUI.debugger.event.register('traceUnloaded', this.stepDetail.reset.bind(this.stepDetail))
-    self.stepDetail.reset()
+  _parentUI.debugger.event.register('newTraceLoaded', this.stepDetail.reset.bind(this.stepDetail))
-  })
-  _parentUI.debugger.event.register('newTraceLoaded', this, function () {
-    self.stepDetail.reset()
-  })
 
   this.vmDebuggerLogic.event.register('traceCurrentStepUpdate', function (error, step) {
     self.stepDetail.updateField('execution step', (error ? '-' : step))