Fix a build error on GNU/Hurd for pciutils 3.7.0.

commit 053cf6c8b2acafadf828912828336d90fe9b8696
Author: Martin Mares <mj@ucw.cz>
Date:   Sun May 31 11:53:28 2020 +0200

    HURD backend should compile again
    
    Fixes a bug introduced by commit 82c06b47dea5a38075ce9d56f743360bc47b4c78.

diff --git a/lib/hurd.c b/lib/hurd.c
index 7b3b2ae..ccd92f6 100644
--- a/lib/hurd.c
+++ b/lib/hurd.c
@@ -307,7 +307,6 @@ hurd_fill_regions(struct pci_dev *d)
       d->base_addr[i] |= regions[i].is_64 << 2;
       d->base_addr[i] |= regions[i].is_prefetchable << 3;
 
-      if (flags & PCI_FILL_SIZES)
-	d->size[i] = regions[i].size;
+      d->size[i] = regions[i].size;
     }
 }