[Rd] as.Date: conversion pb from POSIXct (PR#9386)

[xiao.gang.fan1 at free.fr]

Full_Name: Xiao Gang FAN
Version: 2.4.0
OS: Windows
Submission from: (NULL) (159.50.101.9)


> library(chron)
> as.Date(as.POSIXct(strptime("1994-01-24","%Y-%m-%d")))
[1] "1994-01-23"