Merge pull request #254 from Vagabond/adt-badarg-stacktrace

Improve format_reason for certain oddly formed badarg stacktraces

src/error_logger_lager_h.erl

@@ -353,6 +353,8 @@ format_reason({badarg, [MFA,MFA2|_]}) ->
             %% seems to be generated by a bad call to a BIF
             ["bad argument in ", format_mfa(MFA)]
     end;
+format_reason({{badarg, Stack}, _}) ->
+    format_reason({badarg, Stack});
 format_reason({{badarity, {Fun, Args}}, [MFA|_]}) ->
     {arity, Arity} = lists:keyfind(arity, 1, erlang:fun_info(Fun)),
     [io_lib:format("fun called with wrong arity of ~w instead of ~w in ",