Fixd bug for pyenv plugin
Fixd bug for pyenv plugin

Check pyenv-virtualenv can eval before use it.

Signed-off-by: Superbil <cb0dd13bf3fa20c3a6c4262c585715e5ffca85ab@gmail.com>

ammula88/oh-my-zsh,ammula88/oh-my-zsh,ammula88/oh-my-zsh,ammula88/oh-my-zsh