Update inc/field.class.php

Co-authored-by: Stanislas <skita@teclib.com>

Author: MyvTsv

inc/field.class.php

@@ -154,7 +154,14 @@ public static function installBaseData(Migration $migration, $version)
         }
 
         // Update old genericobject_itemtype dropdown fields to customasset_itemtype dropdown fields
-        if ($DB->tableExists('glpi_plugin_genericobject_types')) {
+        // Update old genericobject_itemtype dropdown fields to customasset_itemtype dropdown fields
+        $has_genericobject_fields = $DB->tableExists('glpi_plugin_genericobject_types')
+            && $DB->request([
+                'COUNT' => 'id',
+                'FROM'  => self::getTable(),
+                'WHERE' => ['type' => ['LIKE', 'dropdown-PluginGenericobject%']],
+            ])->current()['COUNT(id)'] > 0;
+        if ($has_genericobject_fields) {
             // Get all types from PluginGenericobject
             $migration_genericobject_itemtypes = PluginFieldsMigration::getGenericObjectTypes();