Remove a number of extui instructions
Remove a number of extui instructions

Using a uint8_t for the loop counter resulted
in a number of 8-bit extract (extui) instructions.
Using a uint32_t prevents this.

sticilface/Arduino,Adam5Wu/Arduino,esp8266/Arduino,Juppit/Arduino,sticilface/Arduino,Juppit/Arduino,Adam5Wu/Arduino,hallard/Arduino,lrmoreno007/Arduino,me-no-dev/Arduino,me-no-dev/Arduino,me-no-dev/Arduino,wemos/Arduino,hallard/Arduino,lrmoreno007/Arduino,lrmoreno007/Arduino,Adam5Wu/Arduino,wemos/Arduino,wemos/Arduino,hallard/Arduino,Juppit/Arduino,jes/Arduino,hallard/Arduino,esp8266/Arduino,wemos/Arduino,me-no-dev/Arduino,Juppit/Arduino,Lan-Hekary/Arduino,esp8266/Arduino,hallard/Arduino,jes/Arduino,Juppit/Arduino,Lan-Hekary/Arduino,Adam5Wu/Arduino,jes/Arduino,wemos/Arduino,Adam5Wu/Arduino,Lan-Hekary/Arduino,esp8266/Arduino,lrmoreno007/Arduino,sticilface/Arduino,sticilface/Arduino,esp8266/Arduino,Lan-Hekary/Arduino,lrmoreno007/Arduino,jes/Arduino,sticilface/Arduino,me-no-dev/Arduino,jes/Arduino,Lan-Hekary/Arduino