Silence a clazy warning

python/core/auto_generated/qgsproject.sip.in

@@ -1361,8 +1361,12 @@ Constructor for QgsProjectDirtyBlocker.
 This will block dirtying the specified ``project`` for the lifetime of this object.
 %End
 
+
+
     ~QgsProjectDirtyBlocker();
 
+  private:
+    QgsProjectDirtyBlocker( const QgsProjectDirtyBlocker &other );
 };
 
 

src/core/qgsproject.h

@@ -1400,13 +1400,23 @@ class CORE_EXPORT QgsProjectDirtyBlocker
       mProject->mDirtyBlockCount++;
     }
 
+    //! QgsProjectDirtyBlocker cannot be copied
+    QgsProjectDirtyBlocker( const QgsProjectDirtyBlocker &other ) = delete;
+
+    //! QgsProjectDirtyBlocker cannot be copied
+    QgsProjectDirtyBlocker &operator=( const QgsProjectDirtyBlocker &other ) = delete;
+
     ~QgsProjectDirtyBlocker()
     {
       mProject->mDirtyBlockCount--;
     }
 
   private:
     QgsProject *mProject = nullptr;
+
+#ifdef SIP_RUN
+    QgsProjectDirtyBlocker( const QgsProjectDirtyBlocker &other );
+#endif
 };
 
 /**