fix for Vect__divide_and_conquer()

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@44960 15284696-431f-4ddb-bdfa-cd5b030d7da7

lib/vector/Vlib/poly.c

@@ -24,8 +24,8 @@
 
 struct Slink
 {
-    double x;
     struct Slink *next;
+    double x;
 };