xxd: avoid use of uninitialised variable

If xxd is run with '-r' but no '-s' the value of opt_s passed to
reverse() is uninitialised.

This patch has been submitted upstream but hasn't been applied yet.

1 files changed, 4 insertions, 0 deletions

diff --git a/util-linux/hexdump_xxd.c b/util-linux/hexdump_xxd.c
index 6629407de..9173f5d43 100644
--- a/util-linux/hexdump_xxd.c
+++ b/util-linux/hexdump_xxd.c
@@ -229,7 +229,11 @@ int xxd_main(int argc UNUSED_PARAM, char **argv)
 {
         char buf[80];
         dumper_t *dumper;
+#if !ENABLE_PLATFORM_MINGW32
         char *opt_l, *opt_s, *opt_o;
+#else
+        char *opt_l, *opt_s = NULL, *opt_o;
+#endif
         unsigned bytes = 2;
         unsigned cols = 0;
         unsigned opt;