Work around -Werror=maybe-uninitialized not being very bright.

The compiler doesn't believe the loop always executes at least once,
even though the data in the first array entry doesn't satisfy the exit
condition.  So just initialize the thing to shut it up.

Signed-off-by: Peter Jones <pjones@redhat.com>
Signed-off-by: Nigel Croxon <ncroxon@redhat.com>

apps/route80h.c

@@ -93,7 +93,7 @@ efi_main (EFI_HANDLE image_handle, EFI_SYSTEM_TABLE *systab)
 	InitializeLib(image_handle, systab);
 	EFI_PCI_IO *pciio = NULL;
 	lpcif_t lpcif;
-	EFI_STATUS rc;
+	EFI_STATUS rc = EFI_SUCCESS;
 	struct {
 		uint16_t vendor;
 		uint16_t device;