apk: fix all_options array size off-by-one

merge_options() will write one more entry to the options table
which is the end-of-table indicator. Allocate memory for it too.
valgrind did not pick it up due to being in stack; changing alloca
to malloc would make valgrind notice the issue too.

Reported-by: Mobile Stream <info@mobile-stream.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/apk.c b/src/apk.c
index 071d5ae..f4e510f 100644
--- a/src/apk.c
+++ b/src/apk.c
@@ -542,7 +542,7 @@ int main(int argc, char **argv)
 	applet = deduce_applet(argc, argv);
 	if (applet && applet->optgroups[0]) optgroups = applet->optgroups;
 
-	for (i = 0, num_options = 0; optgroups[i]; i++)
+	for (i = 0, num_options = 1; optgroups[i]; i++)
 		num_options += optgroups[i]->num_options;
 	all_options = alloca(sizeof(struct option) * num_options);
 	for (i = r = 0; optgroups[i]; r += optgroups[i]->num_options, i++)