Fix segfault in openssl app called with no args.

This is a result of removal of interactive mode.
Redirected it to now use 'openssl help'.

Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/12164)

1 files changed, 7 insertions, 2 deletions

diff --git a/apps/openssl.c b/apps/openssl.c
index 7b0ccbcc09..4c97936824 100644
--- a/apps/openssl.c
+++ b/apps/openssl.c
@@ -308,6 +308,13 @@ int help_main(int argc, char **argv)
     char *prog;
     HELP_CHOICE o;
     DISPLAY_COLUMNS dc;
+    char *new_argv[3];
+
+    if (argc == 0) {
+        new_argv[0] = "help";
+        new_argv[1] = NULL;
+        return do_cmd(prog_init(), 1, new_argv);
+    }
 
     prog = opt_init(argc, argv, help_options);
     while ((o = opt_next()) != OPT_hEOF) {
@@ -323,8 +330,6 @@ int help_main(int argc, char **argv)
     }
 
     if (opt_num_rest() == 1) {
-        char *new_argv[3];
-
         new_argv[0] = opt_rest()[0];
         new_argv[1] = "--help";
         new_argv[2] = NULL;