merged fix from RC_0_16

examples/client_test.cpp

@@ -1498,6 +1498,7 @@ int main(int argc, char* argv[])
 			if (std::strstr(i->c_str(), "magnet:") == i->c_str())
 			{
 				add_torrent_params tmp;
+				ec.clear();
 				parse_magnet_uri(*i, tmp, ec);
 
 				if (ec) continue;

src/magnet_uri.cpp

@@ -143,6 +143,7 @@ namespace libtorrent
 
 	void parse_magnet_uri(std::string const& uri, add_torrent_params& p, error_code& ec)
 	{
+		ec.clear();
 		std::string name;
 		std::string tracker;