phyp: Resolve memory leak in phypStorageVolCreateXML

The @spdef would be leaked in the normal path.

Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>

src/phyp/phyp_driver.c

@@ -2031,6 +2031,7 @@ phypStorageVolCreateXML(virStoragePoolPtr pool,
         goto err;
 
     VIR_FREE(key);
+    virStoragePoolDefFree(spdef);
 
     return vol;