fix: author overwrite when converting from pwf (ref #409)

src/graph.cpp

@@ -1565,25 +1565,33 @@ bool BotGraph::convertOldFormat () {
                // add to node array
                m_paths.push (cr::move (path));
             }
-         }
-      }
-      else {
-         return false;
-      }
             fp.close();
-   }
-   else {
-      return false;
-   }
 
                // save new format in case loaded older one
             if (!m_paths.empty()) {
                ctrl.msg("Converting old PWF to new format Graph.");
 
                m_graphAuthor = header.author;
-      return saveGraphData ();
+
+               // clean editor so graph will be saved with header's author
+               auto editor = m_editor;
+               m_editor = nullptr;
+
+               auto result = saveGraphData();
+               m_editor = editor;
+
+               return result;
             }
-   return true;
+         }
+      }
+      else {
+         return false;
+      }
+   }
+   else {
+      return false;
+   }
+   return false;
 }
 
 template <typename U> bool BotGraph::saveStorage (StringRef ext, StringRef name, StorageOption options, StorageVersion version, const SmallArray <U> &data, ExtenHeader *exten) {