py/objmap: Convert mp_uint_t to size_t.
py/objmap: Convert mp_uint_t to size_t.

ryannathans/micropython,MrSurly/micropython,tralamazza/micropython,dmazzella/micropython,Timmenem/micropython,oopy/micropython,infinnovation/micropython,TDAbboud/micropython,pfalcon/micropython,HenrikSolver/micropython,MrSurly/micropython,kerneltask/micropython,alex-robbins/micropython,bvernoux/micropython,kerneltask/micropython,SHA2017-badge/micropython-esp32,swegener/micropython,MrSurly/micropython,alex-robbins/micropython,micropython/micropython-esp32,HenrikSolver/micropython,alex-robbins/micropython,pramasoul/micropython,cwyark/micropython,henriknelson/micropython,AriZuu/micropython,hiway/micropython,toolmacher/micropython,adafruit/circuitpython,pfalcon/micropython,ryannathans/micropython,Timmenem/micropython,micropython/micropython-esp32,pfalcon/micropython,henriknelson/micropython,pramasoul/micropython,adafruit/circuitpython,lowRISC/micropython,ryannathans/micropython,tobbad/micropython,AriZuu/micropython,TDAbboud/micropython,swegener/micropython,ryannathans/micropython,swegener/micropython,infinnovation/micropython,MrSurly/micropython-esp32,cwyark/micropython,torwag/micropython,selste/micropython,deshipu/micropython,MrSurly/micropython-esp32,MrSurly/micropython-esp32,infinnovation/micropython,SHA2017-badge/micropython-esp32,adafruit/circuitpython,TDAbboud/micropython,tobbad/micropython,kerneltask/micropython,toolmacher/micropython,AriZuu/micropython,adafruit/micropython,swegener/micropython,blazewicz/micropython,hiway/micropython,trezor/micropython,tobbad/micropython,adafruit/micropython,chrisdearman/micropython,bvernoux/micropython,deshipu/micropython,pramasoul/micropython,lowRISC/micropython,oopy/micropython,adafruit/circuitpython,Peetz0r/micropython-esp32,trezor/micropython,hiway/micropython,henriknelson/micropython,cwyark/micropython,infinnovation/micropython,deshipu/micropython,tobbad/micropython,kerneltask/micropython,adafruit/circuitpython,Peetz0r/micropython-esp32,AriZuu/micropython,micropython/micropython-esp32,kerneltask/micropython,Peetz0r/micropython-esp32,adafruit/micropython,tralamazza/micropython,PappaPeppar/micropython,toolmacher/micropython,SHA2017-badge/micropython-esp32,Timmenem/micropython,blazewicz/micropython,torwag/micropython,trezor/micropython,dmazzella/micropython,dmazzella/micropython,MrSurly/micropython,hiway/micropython,chrisdearman/micropython,trezor/micropython,henriknelson/micropython,SHA2017-badge/micropython-esp32,puuu/micropython,deshipu/micropython,oopy/micropython,selste/micropython,HenrikSolver/micropython,adafruit/micropython,trezor/micropython,Peetz0r/micropython-esp32,blazewicz/micropython,pozetroninc/micropython,puuu/micropython,deshipu/micropython,lowRISC/micropython,pfalcon/micropython,tobbad/micropython,cwyark/micropython,blazewicz/micropython,toolmacher/micropython,TDAbboud/micropython,adafruit/micropython,chrisdearman/micropython,alex-robbins/micropython,HenrikSolver/micropython,PappaPeppar/micropython,bvernoux/micropython,SHA2017-badge/micropython-esp32,oopy/micropython,PappaPeppar/micropython,puuu/micropython,HenrikSolver/micropython,PappaPeppar/micropython,pramasoul/micropython,bvernoux/micropython,Peetz0r/micropython-esp32,MrSurly/micropython-esp32,Timmenem/micropython,selste/micropython,blazewicz/micropython,selste/micropython,swegener/micropython,oopy/micropython,AriZuu/micropython,ryannathans/micropython,TDAbboud/micropython,puuu/micropython,lowRISC/micropython,micropython/micropython-esp32,pramasoul/micropython,MrSurly/micropython-esp32,bvernoux/micropython,torwag/micropython,puuu/micropython,infinnovation/micropython,micropython/micropython-esp32,torwag/micropython,hiway/micropython,torwag/micropython,adafruit/circuitpython,toolmacher/micropython,PappaPeppar/micropython,pozetroninc/micropython,chrisdearman/micropython,pfalcon/micropython,pozetroninc/micropython,lowRISC/micropython,cwyark/micropython,henriknelson/micropython,chrisdearman/micropython,selste/micropython,alex-robbins/micropython,MrSurly/micropython,tralamazza/micropython,tralamazza/micropython,pozetroninc/micropython,pozetroninc/micropython,dmazzella/micropython,Timmenem/micropython