patch 8.2.0958: not sufficient testing for buffer writing

Problem:    Not sufficient testing for buffer writing.
Solution:   Add a few tests. (Yegappan Lakshmanan, closes #6238)
diff --git a/src/version.c b/src/version.c
index 5638e82..8b08d07 100644
--- a/src/version.c
+++ b/src/version.c
@@ -755,6 +755,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    958,
+/**/
     957,
 /**/
     956,