patch 9.1.0783: 'spell' option setting has problems

Problem:  'spell' option setting has problems
Solution: correctly check for comma for 'spellfile' option,
          remove unnecessary checks, refactor slightly (Milly)

closes: #15873

Signed-off-by: Milly <milly.ca@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/version.c b/src/version.c
index c636211..2043563 100644
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    783,
+/**/
     782,
 /**/
     781,