Index: trunk/psLib/src/types/psTree.c
===================================================================
--- trunk/psLib/src/types/psTree.c	(revision 18162)
+++ trunk/psLib/src/types/psTree.c	(revision 18174)
@@ -124,5 +124,5 @@
     va_start(args, maxLeafContents);
     psArray *coords = psArrayAlloc(dim); // Array of coordinates
-    long numData;                       // Number of data points
+    long numData = 0;                   // Number of data points
     for (int i = 0; i < dim; i++) {
         psVector *data = va_arg(args, psVector*);