android/client: Fix crash in tab completion

When user pressed tab on third or later argument when
first two did not make sense tool crashed.
Now method is checked for NULL before accessing help field.

diff --git a/android/client/tabcompletion.c b/android/client/tabcompletion.c
index 69af609..cc1a5d3 100644 (file)
--- a/android/client/tabcompletion.c
+++ b/android/client/tabcompletion.c
@@ -332,7 +332,7 @@ static void param_completion(int argc, const split_arg_t *arg,
        if (args.func != NULL) {
                args.typed = argv[argc - 1];
                args.help = method_help;
-               args.user_help = (void *) method->help;
+               args.user_help = method ? (void *) method->help : NULL;
 
                tab_completion(&args);
        }