patch 8.2.2406: Vim9: profiled :def function leaks memory

Problem:    Vim9: profiled :def function leaks memory.
Solution:   Delete the profiled instructions.

Author: brammool

src/version.c

@@ -750,6 +750,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2406,
 /**/
     2405,
 /**/

src/vim9compile.c

@@ -8837,6 +8837,15 @@ delete_def_function_contents(dfunc_T *dfunc, int mark_deleted)
 	VIM_CLEAR(dfunc->df_instr);
 	dfunc->df_instr = NULL;
     }
+#ifdef FEAT_PROFILE
+    if (dfunc->df_instr_prof != NULL)
+    {
+	for (idx = 0; idx < dfunc->df_instr_prof_count; ++idx)
+	    delete_instr(dfunc->df_instr_prof + idx);
+	VIM_CLEAR(dfunc->df_instr_prof);
+	dfunc->df_instr_prof = NULL;
+    }
+#endif
 
     if (mark_deleted)
 	dfunc->df_deleted = TRUE;