Stop adding super type names for documents that are already there

This fixes a small memory leak in the reference resolver. Although the supertypes of a class declaration are a hash set, the super type names are a list. So, adding all supertype names derived from the typeLib API every parse would grow that list unnecessarily.

Author: MDoerner

Rubberduck.Parsing/VBA/ReferenceManagement/ReferenceResolveRunnerBase.cs

@@ -191,6 +191,11 @@ private void AddSuperTypeNamesForDocumentModules(IReadOnlyCollection<QualifiedMo
 
                     foreach (var superTypeName in superTypeNames)
                     {
+                        if (document.SupertypeNames.Contains(superTypeName))
+                        {
+                            continue;
+                        }
+
                         document.AddSupertypeName(superTypeName);
                     }
                 }