patch 9.1.1415: potential use-after free when there is an error in 'tabpanel'

Problem:  potential use-after free when there is an error in 'tabpanel'
          option (@char101, after v9.1.1391)
Solution: check if p_tpl has been set to null before accessing it again.

While at it slightly change starts_with_percent_and_bang() and use the
existing opt_name and opt_scope variables.

fixes: #17364
closes: #17388

Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/version.c b/src/version.c
index 5366f3f..a788db1 100644
--- a/src/version.c
+++ b/src/version.c
@@ -710,6 +710,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1415,
+/**/
     1414,
 /**/
     1413,