efi_loader: efi_set_timer: reset signaled state

We should be able to call efi_set_timer repeatedly.
So let us reset the signaled state here.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
diff --git a/lib/efi_loader/efi_boottime.c b/lib/efi_loader/efi_boottime.c
index 408b4a9..73793cd 100644
--- a/lib/efi_loader/efi_boottime.c
+++ b/lib/efi_loader/efi_boottime.c
@@ -363,6 +363,7 @@
 		}
 		event->trigger_type = type;
 		event->trigger_time = trigger_time;
+		event->signaled = 0;
 		return EFI_SUCCESS;
 	}
 	return EFI_INVALID_PARAMETER;