Fix set but unused variable in dualcon octree

intern/dualcon/intern/octree.cpp

@@ -897,12 +897,10 @@ void Octree::printPath(PathElement *path)
 void Octree::printPaths(PathList *path)
 {
   PathList *iter = path;
-  int i = 0;
   while (iter != NULL) {
     dc_printf("Path %d:\n", i);
     printPath(iter);
     iter = iter->next;
-    i++;
   }
 }
 
@@ -1256,7 +1254,6 @@ Node *Octree::connectFace(
 
     updateParent(&newnode->internal, len, st);
 
-    int flag = 0;
     // Add the cells to the rings and fill in the patch
     PathElement *newEleN;
     if (curEleN->pos[0] != stN[0] || curEleN->pos[1] != stN[1] || curEleN->pos[2] != stN[2]) {
@@ -1286,7 +1283,6 @@ Node *Octree::connectFace(
                            alpha);
 
       curEleN = newEleN;
-      flag++;
     }
 
     PathElement *newEleP;
@@ -1316,7 +1312,6 @@ Node *Octree::connectFace(
                            alpha);
 
       curEleP = newEleP;
-      flag++;
     }
 
     /*
@@ -1543,6 +1538,8 @@ void Octree::getFacePoint(PathElement *leaf, int dir, int &x, int &y, float &p,
   float off[3];
   int num = 0, num2 = 0;
 
+  (void)num2;  // Unused in release builds.
+
   LeafNode *leafnode = locateLeaf(leaf->pos);
   for (int i = 0; i < 4; i++) {
     int edgeind = faceMap[dir * 2][i];