patch 8.0.1225: no check for spell region being zero

Problem:    No check for spell region being zero. (geeknik)
Solution:   Check for zero. (closes #2252)
diff --git a/src/version.c b/src/version.c
index 2b8fda7..6ab4e75 100644
--- a/src/version.c
+++ b/src/version.c
@@ -762,6 +762,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1225,
+/**/
     1224,
 /**/
     1223,