fix: duplicate game names during gb import

When importing a gamebase database with the option "All games - create gamelist views based on genre" duplicate game names where not imported correcly, some got imported twice and some where missing.

src/main/java/se/lantz/gui/imports/GamebaseImportWorker.java

@@ -149,7 +149,7 @@ public class GamebaseImportWorker extends AbstractImportWorker
     {
       importManager.createGameViewForViewTag(this);
     }
-    return importManager.clearAfterImport();
+    return importManager.importExecuted();
   }
 
   @Override

src/main/java/se/lantz/manager/ImportManager.java

@@ -1043,12 +1043,18 @@ public class ImportManager
     return size;
   }
 
-  public int clearAfterImport()
+  public void clearAfterImport()
   {
+    //Clear after import completed
+    gameFileNamesDuringImportMap.clear();
+  }
+  
+  public int importExecuted()
+  {
+    //Clear for next iteration
     int size = dbRowDataList.size();
     dbRowDataList.clear();
-    gameInfoFilesMap.clear();
-    gameFileNamesDuringImportMap.clear();
+    gameInfoFilesMap.clear();  
     uiModel.cleanupAfterImport();
     viewName = null;
     viewTag = null;