patch 9.1.0803: tests: no error check when setting global 'isk'

Problem:  tests: no error check when setting global 'isk'
Solution: also parse and check global 'isk' value (Milly)

closes: #15915

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 4184b55..b26e848 100644
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    803,
+/**/
     802,
 /**/
     801,