COPKGManager: use of appropriate width

Most entries are larger then 40% and in case of failed package update,
window is too small. Displayerrors in footer bar are possible.

src/gui/opkg_manager.cpp

@@ -81,7 +81,7 @@ static const std::string pkg_types[OM_MAX] =
 
 COPKGManager::COPKGManager()
 {
-	width = w_max (40, 10); //%
+	width = w_max (80, 10); //%
 	pkg_map.clear();
 	list_installed_done = false;
 	list_upgradeable_done = false;