Re-re-fix issue #909

Author: Hosch250

Rubberduck.VBEEditor/VBEHost/HostApplicationBase.cs

@@ -26,10 +26,7 @@ protected HostApplicationBase(string applicationName)
 
         ~HostApplicationBase()
         {
-            if (Application != null)
-            {
-                Marshal.ReleaseComObject(Application);
-            }
+			Dispose(false);
         }
 
         public string ApplicationName
@@ -41,6 +38,11 @@ public string ApplicationName
 
         public TimeSpan TimedMethodCall(QualifiedMemberName qualifiedMemberName)
         {
+			if (_disposed)
+			{
+				throw new ObjectDisposedException(GetType().Name);
+			}
+		
             var stopwatch = Stopwatch.StartNew();
 
             Run(qualifiedMemberName);
@@ -52,16 +54,26 @@ public TimeSpan TimedMethodCall(QualifiedMemberName qualifiedMemberName)
         public void Dispose()
         {
             Dispose(true);
+			GC.SuppressFinalize(this);
         }
 
+		private bool _disposed;
         protected virtual void Dispose(bool disposing)
         {
-            if (!disposing) { return; }
-
-            if (Application != null)
+			if (_disposed) { return; }
+			
+			// clean up managed resources
+			if (Application != null)
             {
                 Marshal.ReleaseComObject(Application);
             }
+		
+            if (disposing) 
+			{ 
+				// we don't have any managed resources to clean up right now.
+			}
+
+			_disposed = true;
         }
     }
 }