Update MonoOLED i2c constructor to match var def order

[nsasch]

This updates the initialization of variables in the I2C Adafruit_MonoOLED constructor. The call signature and variable definitions are unchanged. This fixes a reorder compiler warning due to member initialization not matching member declaration. This becomes a compiler error with the standard ESP32 platform.txt with warning level "All".

The mock_ili9341 example compiles with no new warnings with compiler.warning_level=all in the latest Arduino IDE. This was tested for Adafruit Circuit Playground, ESP32, and Arduino Due.

[ladyada]

thank you so much :)

[ladyada]

i should figure out how to turn on warning_level=all in the arduino cli so CI can catch it, do you know how by chance?

[nsasch]

I'm not sure off-hand. It might require a change in adafruit/ci-arduino. I'll look into it today, and either make another PR or comment here with what I find. I'm sure it's one line of code... just need to find which line.

[ladyada]

yeah ideally we update ci-arduino and then all 250+ arduino libraries will get the new check :)