patch 8.2.4976: Coverity complains about not restoring a saved value

Problem:    Coverity complains about not restoring a saved value.
Solution:   Restore value before handling error.
diff --git a/src/version.c b/src/version.c
index 8d901e4..4c63ea0 100644
--- a/src/version.c
+++ b/src/version.c
@@ -747,6 +747,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4976,
+/**/
     4975,
 /**/
     4974,