patch 8.2.1169: write NUL past allocated space using corrupted spell file

Problem:    Write NUL past allocated space using corrupted spell file.
            (Markus Vervier)
Solution:   Init "c" every time.
diff --git a/src/version.c b/src/version.c
index 0b31e54..88bd908 100644
--- a/src/version.c
+++ b/src/version.c
@@ -755,6 +755,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1169,
+/**/
     1168,
 /**/
     1167,