Index: trunk/psphot/src/setup.c
===================================================================
--- trunk/psphot/src/setup.c	(revision 4641)
+++ trunk/psphot/src/setup.c	(revision 4642)
@@ -83,6 +83,7 @@
     float YMAX  = psMetadataLookupF32 (&status, config, "YMAX");
     psRegion *keep = psRegionAlloc (XMIN, XMAX, YMIN, YMAX);
-    keep           = psRegionForImage (keep, image, keep);
+    keep = psRegionForImage (keep, image, keep);
     psImageKeepRegion (mask, keep, OR, 0x01);
+    psFree (keep);
 
     // mask the saturated pixels