Fix contour tool (draw first pixel for contour tool)

src/app/tools/intertwiners.h

@@ -115,9 +115,12 @@ class IntertwineAsLines : public Intertwine {
         // Don't draw the first point in freehand tools (this is to
         // avoid painting above the last pixel of a freehand stroke,
         // when we use Shift+click in the Pencil tool to continue the
-        // old stroke).
+        // old stroke). When filled is true we are talking about the
+        // contour tool, so we do all the points.
         // TODO useful only in the case when brush size = 1px
-        const int start = (loop->getController()->isFreehand() ? 1: 0);
+        const int start =
+          (loop->getController()->isFreehand() &&
+           !loop->getFilled() ? 1: 0);
 
         for (int c=start; c<m_pts.size(); ++c)
           doPointshapePoint(m_pts[c].x, m_pts[c].y, loop);