fix for cairo_arc

Without a new (sub)path, it joined the new circle to the old reference point,
what happend to be at the end of the title-text - therefore the line to it with
cairo_stroke()

Signed-off-by: Julien Danjou <julien@danjou.info>

common/draw.c

@@ -230,6 +230,9 @@ draw_circle(DrawCtx *ctx, int x, int y, int r, Bool filled, XColor color)
 {
     cairo_set_line_width(ctx->cr, 1.0);
     cairo_set_source_rgb(ctx->cr, color.red / 65535.0, color.green / 65535.0, color.blue / 65535.0);
+
+    cairo_new_sub_path(ctx->cr); /* don't draw from the old reference point to.. */
+
     if(filled)
     {
         cairo_arc (ctx->cr, x + r, y + r, r, 0, 2 * M_PI);