patch 8.0.1502: in out-of-memory situation character is not restored

Problem:    In out-of-memory situation character is not restored. (Coverity)
Solution:   Restore the character in all situations.
diff --git a/src/version.c b/src/version.c
index d96f896..62fd9ed 100644
--- a/src/version.c
+++ b/src/version.c
@@ -772,6 +772,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1502,
+/**/
     1501,
 /**/
     1500,