Enable printf format argument checking.

The original attempt missed the fact that Print is a member function,
so the first argument is the implicit 'this'.

Change-Id: I963b668c5432804c767f0a2e3ef7dea5978a1218
diff --git a/recovery.cpp b/recovery.cpp
index 2f8654a..1726a22 100644
--- a/recovery.cpp
+++ b/recovery.cpp
@@ -844,7 +844,7 @@
 
     char* path = browse_directory(SDCARD_ROOT, device);
     if (path == NULL) {
-        ui->Print("\n-- No package file selected.\n", path);
+        ui->Print("\n-- No package file selected.\n");
         return INSTALL_ERROR;
     }