patch 8.2.2615: test is sourcing the wrong file

Problem:    Test is sourcing the wrong file.
Solution:   Correct the file name.

src/testdir/test_vim9_script.vim

@@ -1575,7 +1575,7 @@ def Test_script_reload_from_function()
       delcommand CallFunc
       command CallFunc Func()
       def Func()
-        so /tmp/test.vim
+        so XreloadFunc.vim
         g:didTheFunc = 1
       enddef
   END

src/version.c

@@ -750,6 +750,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2615,
 /**/
     2614,
 /**/