TS-3896: Fix crash in OpenDir::close_write from unlocked mutex.
TS-3896: Fix crash in OpenDir::close_write from unlocked mutex.

chenglongwei/trafficserver,duke8253/trafficserver,duke8253/trafficserver,rahmalik/trafficserver,chenglongwei/trafficserver,SolidWallOfCode/trafficserver,rahmalik/trafficserver,rahmalik/trafficserver,davidbz/trafficserver,taoyunxing/trafficserver,chenglongwei/trafficserver,pbchou/trafficserver,davidbz/trafficserver,taoyunxing/trafficserver,PSUdaemon/trafficserver,pbchou/trafficserver,taoyunxing/trafficserver,duke8253/trafficserver,persiaAziz/trafficserver,davidbz/trafficserver,chitianhao/trafficserver,PSUdaemon/trafficserver,SolidWallOfCode/trafficserver,bryancall/trafficserver,persiaAziz/trafficserver,clearswift/trafficserver,reveller/trafficserver,dyrock/trafficserver,clearswift/trafficserver,clearswift/trafficserver,PSUdaemon/trafficserver,SolidWallOfCode/trafficserver,chenglongwei/trafficserver,rahmalik/trafficserver,vmamidi/trafficserver,pbchou/trafficserver,bryancall/trafficserver,bryancall/trafficserver,clearswift/trafficserver,PSUdaemon/trafficserver,pbchou/trafficserver,PSUdaemon/trafficserver,reveller/trafficserver,taoyunxing/trafficserver,chitianhao/trafficserver,dyrock/trafficserver,chitianhao/trafficserver,rpufky/trafficserver,rahmalik/trafficserver,dyrock/trafficserver,bryancall/trafficserver,reveller/trafficserver,bryancall/trafficserver,bryancall/trafficserver,persiaAziz/trafficserver,vmamidi/trafficserver,clearswift/trafficserver,chitianhao/trafficserver,vmamidi/trafficserver,duke8253/trafficserver,rahmalik/trafficserver,davidbz/trafficserver,chenglongwei/trafficserver,pbchou/trafficserver,vmamidi/trafficserver,persiaAziz/trafficserver,davidbz/trafficserver,rahmalik/trafficserver,SolidWallOfCode/trafficserver,reveller/trafficserver,SolidWallOfCode/trafficserver,clearswift/trafficserver,PSUdaemon/trafficserver,dyrock/trafficserver,taoyunxing/trafficserver,taoyunxing/trafficserver,persiaAziz/trafficserver,rpufky/trafficserver,duke8253/trafficserver,rpufky/trafficserver,rpufky/trafficserver,reveller/trafficserver,clearswift/trafficserver,duke8253/trafficserver,reveller/trafficserver,clearswift/trafficserver,rpufky/trafficserver,SolidWallOfCode/trafficserver,dyrock/trafficserver,pbchou/trafficserver,vmamidi/trafficserver,duke8253/trafficserver,reveller/trafficserver,rpufky/trafficserver,PSUdaemon/trafficserver,dyrock/trafficserver,rahmalik/trafficserver,taoyunxing/trafficserver,clearswift/trafficserver,chitianhao/trafficserver,taoyunxing/trafficserver,davidbz/trafficserver,persiaAziz/trafficserver,chenglongwei/trafficserver,persiaAziz/trafficserver,rpufky/trafficserver,rahmalik/trafficserver,SolidWallOfCode/trafficserver,chitianhao/trafficserver,persiaAziz/trafficserver,vmamidi/trafficserver,PSUdaemon/trafficserver,taoyunxing/trafficserver,reveller/trafficserver,rpufky/trafficserver,chenglongwei/trafficserver,dyrock/trafficserver,rpufky/trafficserver,reveller/trafficserver,chitianhao/trafficserver,PSUdaemon/trafficserver,chenglongwei/trafficserver