Applied cppcoreguidelines-avoid-non-const-global-variables clang-tidy fixes

src/common/model/diagram_element.cc

@@ -24,8 +24,6 @@
 
 namespace clanguml::common::model {
 
-std::atomic_uint64_t diagram_element::m_nextId = 1;
-
 diagram_element::diagram_element() = default;
 
 diagram_element::id_t diagram_element::id() const { return id_; }

src/common/model/diagram_element.h

@@ -82,7 +82,5 @@ private:
     std::vector<relationship> relationships_;
     bool nested_{false};
     bool complete_{false};
-
-    static std::atomic_uint64_t m_nextId;
 };
 } // namespace clanguml::common::model

src/main.cc

@@ -42,7 +42,7 @@
 
 #ifndef NDEBUG
 namespace backward {
-backward::SignalHandling sh;
+backward::SignalHandling sh; // NOLINT
 } // namespace backward
 #endif