Another ChartSpace spanning tile fixup

.. if a tile moves because it clashes with a spanning tile we need
   to repeat the process in case it clashes with another after it
   has been moved.

.. previously we moved on the first clash, but ignored any others.

src/Gui/ChartSpace.cpp

@@ -477,9 +477,12 @@ ChartSpace::updateGeometry()
         int add = 0; //XXX PERFORMANCE ISSSE XXX (state == DRAG) ? (ROWHEIGHT/2) : 0;
 
         // check we don't overlap with any spanning items in earlier columns etc
-        foreach(QRectF spanner, spanners) {
-            if (spanner.intersects(QRect(tx,ty,twidth,theight+SPACING)))
-                ty = spanner.bottomLeft().y() + SPACING;
+again:
+        for(int j=0; j< spanners.count(); j++) {
+            if (spanners[j].intersects(QRect(tx,ty,twidth,theight+SPACING))) {
+                ty = spanners[j].bottomLeft().y() + SPACING;
+                goto again;
+            }
         }
 
         // for setting the scene rectangle - but ignore a ChartSpaceItem if we are dragging it