patch 8.2.1470: errors in spell file not tested

Problem:    Errors in spell file not tested.
Solution:   Add test for spell file errors. (Yegappan Lakshmanan,
            closes #6721)
diff --git a/src/version.c b/src/version.c
index 10c659e..b96a49f 100644
--- a/src/version.c
+++ b/src/version.c
@@ -755,6 +755,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1470,
+/**/
     1469,
 /**/
     1468,