patch 8.0.0883: invalid memory access with nonsensical script

Problem:    Invalid memory access with nonsensical script.
Solution:   Check "dstlen" being positive. (Dominique Pelle)
diff --git a/src/version.c b/src/version.c
index 8c2b032..e6bcfb5 100644
--- a/src/version.c
+++ b/src/version.c
@@ -770,6 +770,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    883,
+/**/
     882,
 /**/
     881,