Index: trunk/psModules/src/concepts/pmConceptsRead.c
===================================================================
--- trunk/psModules/src/concepts/pmConceptsRead.c	(revision 22699)
+++ trunk/psModules/src/concepts/pmConceptsRead.c	(revision 24824)
@@ -425,4 +425,5 @@
     if (rows->n == 0) {
         psWarning("No rows returned from database query for concept %s --- ignored.", name);
+	psFree(rows);
         return NULL;
     }