Mark the argument array as freed in argv_free

diff --git a/tig.c b/tig.c
index a9924c91a7192d6745440f17124e044d4dda6017..f842de567b03108f63dbfe44f3ec7af3bed82a9d 100644 (file)
--- a/tig.c
+++ b/tig.c
@@ -685,6 +685,7 @@ argv_free(const char *argv[])
 
        for (argc = 0; argv[argc]; argc++)
                free((void *) argv[argc]);
+       argv[0] = NULL;
 }
 
 static void