fixed ProjectName extension method for locked projects

Author: retailcoder

Rubberduck.VBEEditor/Extensions/VbProjectExtensions.cs

@@ -10,19 +10,21 @@ public static class ProjectExtensions
         public static string ProjectName(this VBProject project)
         {
             var projectName = project.Name;
-            var documentModule = project
-                .VBComponents.Cast<VBComponent>()
-                .FirstOrDefault(item => item.Type == vbext_ComponentType.vbext_ct_Document);
-
-            if (documentModule != null)
+            if (project.Protection == vbext_ProjectProtection.vbext_pp_none)
             {
-                var hostDocumentNameProperty = documentModule.Properties.Item("Name");
-                if (hostDocumentNameProperty != null)
+                var documentModule = project
+                    .VBComponents.Cast<VBComponent>()
+                    .FirstOrDefault(item => item.Type == vbext_ComponentType.vbext_ct_Document);
+
+                if (documentModule != null)
                 {
-                    projectName += string.Format(" ({0})", hostDocumentNameProperty.Value);
+                    var hostDocumentNameProperty = documentModule.Properties.Item("Name");
+                    if (hostDocumentNameProperty != null)
+                    {
+                        projectName += string.Format(" ({0})", hostDocumentNameProperty.Value);
+                    }
                 }
             }
-
             return projectName;
         }