MDL-21015 copy/paste typo spreaded over various grade classes fixed

diff --git a/lib/grade/grade_scale.php b/lib/grade/grade_scale.php
index 8eb72b068bd3733cb94e9ad8cb320b26bbb1c53c..ea6e81e683c562c82fddd80e27439be682ec619c 100644 (file)
--- a/lib/grade/grade_scale.php
+++ b/lib/grade/grade_scale.php
@@ -127,7 +127,7 @@ class grade_scale extends grade_object {
     public function delete($source=null) {
         global $DB;
         if (parent::delete($source)) {
-            $context = get_context_instace(CONTEXT_SYSTEM);
+            $context = get_context_instance(CONTEXT_SYSTEM);
             $fs = get_file_storage();
             $files = $fs->get_area_files($context->id, 'grade_scale', $this->id);
             foreach ($files as $file) {