Fix clang-tidy warning after upgrading to clang-tidy-15

src/common/generators/nested_element_stack.h

@@ -27,7 +27,6 @@ template <typename T> class nested_element_stack {
 public:
     nested_element_stack(bool is_flat)
         : is_flat_{is_flat}
-        , current_level_{0}
     {
         current_level_groups_.push_back({});
     }
@@ -66,7 +65,7 @@ public:
 private:
     bool is_flat_;
 
-    uint32_t current_level_;
+    uint32_t current_level_{0};
 
     std::vector<std::map<std::string, std::vector<T *>>> current_level_groups_;
 };

src/common/generators/plantuml/generator.h

@@ -212,8 +212,9 @@ inja::json generator<C, D>::element_context(const E &e) const
         ctx["element"]["source"]["line"] = e.line();
     }
 
-    if (e.comment().has_value()) {
-        ctx["element"]["comment"] = e.comment().value();
+    const auto maybe_comment = e.comment();
+    if (maybe_comment) {
+        ctx["element"]["comment"] = maybe_comment.value();
     }
 
     return ctx;