Index: trunk/psModules/src/imcombine/pmSubtraction.c
===================================================================
--- trunk/psModules/src/imcombine/pmSubtraction.c	(revision 18652)
+++ trunk/psModules/src/imcombine/pmSubtraction.c	(revision 18962)
@@ -550,4 +550,5 @@
         rms = 0.74 * (stats->sampleUQ - stats->sampleLQ);
     }
+    psFree(stats);
 
     psTrace("psModules.imcombine", 1, "Mean: %f\n", mean);