Adjust subplot param

I am no expert, but I think this is a fairly simple thing to solve that could contribute to the overall enhancement of the plot() function.
Running the commands bellow a figure is produced.
_
_ _ _(_)_ | A fresh approach to technical computing
(_) | (_) (_) | Documentation: http://docs.julialang.org
_ _ _| |_ __ _ | Type "help()" for help.
| | | | | | |/ _` | |
| | |_| | | | (_| | | Version 0.3.2 (2014-10-21 20:18 UTC)
_/ |\__'_|_|_|__'_| | 'Official http://julialang.org/ release'
|__/ | x86_64-apple-darwin13.3.0

julia> using PyPlot
INFO: Loading help data...

julia> x0 = 1:10;

julia> y0=x0;

julia> plot(x0, y0)
1-element Array{Any,1}:
PyObject

If in said figure the 'adjust subplot param' icon is clicked displaying the 'adjust subplot param' control bars and the figure is closed before the 'adjust subplot param' window, Julia crashes.
I don't think this is particularly urgent or difficult to fix, but since it happen to me, as a way of saying thank you, I thought I should point it out so that the Package becomes even better.

使用报告中的 Julia 0.3.2 命令重现该问题：加载 PyPlot，创建 x0 和 y0，将它们绘图，打开“adjust subplot param”控件，并在该窗口之前关闭 figure。通过 PyPlot 与 matplotlib 的交互追踪崩溃；完成的标准是按该顺序关闭窗口时 Julia 不再崩溃，且绘图行为保持不变。

由索引模型根据 Issue 内容生成。