fixed vita startup crash by guarding commerce calls

Minecraft.Client/Common/Consoles_App.cpp

@@ -4419,7 +4419,7 @@ int CMinecraftApp::EthernetDisconnectReturned(void *pParam,int iPad,const C4JSto
 		//  4J-PB - turn off the PSN store icon just in case this happened when we were in one of the DLC menus
 #ifdef __ORBIS__
 		sceNpCommerceHidePsStoreIcon();
-#elif defined __PSVITA__
+#elif defined(__PSVITA__) && !defined(DISABLE_PSN)
 		app.GetCommerce()->HidePsStoreIcon();
 #endif
 		app.SetAction(iPad,eAppAction_EthernetDisconnectedReturned_Menus);