unix/modsocket: Use mp_const_empty_map instead of creating empty map.
unix/modsocket: Use mp_const_empty_map instead of creating empty map.

pfalcon/micropython,mhoffma/micropython,hiway/micropython,dinau/micropython,hosaka/micropython,drrk/micropython,pramasoul/micropython,lowRISC/micropython,matthewelse/micropython,matthewelse/micropython,Peetz0r/micropython-esp32,cwyark/micropython,puuu/micropython,praemdonck/micropython,tralamazza/micropython,dmazzella/micropython,emfcamp/micropython,TDAbboud/micropython,toolmacher/micropython,drrk/micropython,adafruit/micropython,lowRISC/micropython,tuc-osg/micropython,oopy/micropython,AriZuu/micropython,TDAbboud/micropython,torwag/micropython,pozetroninc/micropython,selste/micropython,cwyark/micropython,misterdanb/micropython,dmazzella/micropython,matthewelse/micropython,trezor/micropython,pozetroninc/micropython,blazewicz/micropython,infinnovation/micropython,oopy/micropython,blazewicz/micropython,adafruit/circuitpython,blazewicz/micropython,adafruit/micropython,misterdanb/micropython,matthewelse/micropython,alex-march/micropython,alex-march/micropython,Peetz0r/micropython-esp32,infinnovation/micropython,chrisdearman/micropython,SHA2017-badge/micropython-esp32,hiway/micropython,alex-march/micropython,adafruit/micropython,trezor/micropython,SHA2017-badge/micropython-esp32,dxxb/micropython,ganshun666/micropython,Timmenem/micropython,kerneltask/micropython,tobbad/micropython,mhoffma/micropython,mhoffma/micropython,Timmenem/micropython,MrSurly/micropython-esp32,toolmacher/micropython,ryannathans/micropython,ryannathans/micropython,dxxb/micropython,blazewicz/micropython,lowRISC/micropython,jmarcelino/pycom-micropython,pfalcon/micropython,alex-march/micropython,ryannathans/micropython,ganshun666/micropython,HenrikSolver/micropython,selste/micropython,misterdanb/micropython,bvernoux/micropython,henriknelson/micropython,swegener/micropython,dinau/micropython,kerneltask/micropython,misterdanb/micropython,adafruit/circuitpython,Peetz0r/micropython-esp32,alex-robbins/micropython,mpalomer/micropython,dinau/micropython,chrisdearman/micropython,SHA2017-badge/micropython-esp32,bvernoux/micropython,drrk/micropython,mpalomer/micropython,turbinenreiter/micropython,bvernoux/micropython,tralamazza/micropython,ryannathans/micropython,chrisdearman/micropython,selste/micropython,redbear/micropython,jmarcelino/pycom-micropython,emfcamp/micropython,tobbad/micropython,deshipu/micropython,oopy/micropython,hiway/micropython,turbinenreiter/micropython,matthewelse/micropython,pfalcon/micropython,bvernoux/micropython,puuu/micropython,praemdonck/micropython,ganshun666/micropython,torwag/micropython,trezor/micropython,hosaka/micropython,HenrikSolver/micropython,PappaPeppar/micropython,swegener/micropython,bvernoux/micropython,lowRISC/micropython,pramasoul/micropython,turbinenreiter/micropython,torwag/micropython,adafruit/circuitpython,dmazzella/micropython,trezor/micropython,tobbad/micropython,redbear/micropython,MrSurly/micropython,adafruit/circuitpython,puuu/micropython,alex-robbins/micropython,PappaPeppar/micropython,alex-robbins/micropython,MrSurly/micropython,pramasoul/micropython,henriknelson/micropython,jmarcelino/pycom-micropython,mpalomer/micropython,ryannathans/micropython,drrk/micropython,tralamazza/micropython,pfalcon/micropython,dinau/micropython,dxxb/micropython,praemdonck/micropython,torwag/micropython,PappaPeppar/micropython,mpalomer/micropython,Timmenem/micropython,adafruit/micropython,toolmacher/micropython,AriZuu/micropython,AriZuu/micropython,SHA2017-badge/micropython-esp32,henriknelson/micropython,selste/micropython,toolmacher/micropython,hosaka/micropython,hiway/micropython,oopy/micropython,misterdanb/micropython,torwag/micropython,selste/micropython,infinnovation/micropython,tuc-osg/micropython,AriZuu/micropython,dxxb/micropython,Timmenem/micropython,MrSurly/micropython-esp32,micropython/micropython-esp32,TDAbboud/micropython,puuu/micropython,HenrikSolver/micropython,tuc-osg/micropython,redbear/micropython,mpalomer/micropython,micropython/micropython-esp32,alex-march/micropython,tobbad/micropython,alex-robbins/micropython,adafruit/micropython,blazewicz/micropython,HenrikSolver/micropython,redbear/micropython,trezor/micropython,praemdonck/micropython,chrisdearman/micropython,tobbad/micropython,deshipu/micropython,MrSurly/micropython,matthewelse/micropython,lowRISC/micropython,infinnovation/micropython,infinnovation/micropython,mhoffma/micropython,pozetroninc/micropython,emfcamp/micropython,deshipu/micropython,MrSurly/micropython-esp32,dmazzella/micropython,oopy/micropython,dxxb/micropython,redbear/micropython,jmarcelino/pycom-micropython,praemdonck/micropython,Peetz0r/micropython-esp32,HenrikSolver/micropython,micropython/micropython-esp32,pozetroninc/micropython,pfalcon/micropython,deshipu/micropython,kerneltask/micropython,hiway/micropython,swegener/micropython,deshipu/micropython,henriknelson/micropython,swegener/micropython,adafruit/circuitpython,Timmenem/micropython,MrSurly/micropython,pozetroninc/micropython,Peetz0r/micropython-esp32,alex-robbins/micropython,toolmacher/micropython,micropython/micropython-esp32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