patch 8.2.2748: Vim9: memory leak when calling :def function fails

Problem:    Vim9: memory leak when calling :def function fails.
Solution:   Jump to failed_early instead of returning.
diff --git a/src/version.c b/src/version.c
index 9fca01a..fa3a9a8 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2748,
+/**/
     2747,
 /**/
     2746,