fix qtree list bug when rescale!

Author: guo-yong-zhi

Project.toml

@@ -1,7 +1,7 @@
 name = "WordCloud"
 uuid = "6385f0a0-cb03-45b6-9089-4e0acc74b26b"
 authors = ["guoyongzhi <momoshanghan@163.com>"]
-version = "0.6.5"
+version = "0.6.6"
 
 [deps]
 ColorSchemes = "35d6a980-a343-548e-a6ea-1d62b119f2f4"

src/wc-method.jl

@@ -100,6 +100,7 @@ function generate!(wc::WC, args...; retry=3, krags...)
     for r in 1:retry
         if r != 1
             rescale!(wc, 0.97)
+            qtrees = [wc.maskqtree, wc.qtrees...]
             dens = textoccupied(getwords(wc), getfontsizes(wc), getfonts(wc))/wc.params[:groundoccupied]
             println("#$r. try scale = $(wc.params[:scale]). The density is reduced to $dens")
         else