cleanup and removing nasty segv upon entity deletion

+ Fixing bug where clicking an entity in the hierarchy didn't update the
stats

editor/src/panels/scene_hierarchy.cpp

@@ -196,7 +196,7 @@ namespace OpenEngine {
         auto& reg = scene->GetRegistry();
         entt::entity handle = selected_context;
 
-        if (!selected_context)
+        if (!selected_context || !entity)
             return;
 
         entity.GetComponents<TagComponent>();
@@ -222,7 +222,6 @@ namespace OpenEngine {
                     if (ImGui::Button("...", ImVec2{ line_height, line_height }))
                         ImGui::OpenPopup("component_settings");
                     ImGui::PopStyleColor();
-
                     ImGui::PopStyleVar();
 
                     if (ImGui::BeginPopup("component_settings")) {