retryDurationOnAttempt(n) function is missing in carelink.js

[benceszasz]

The retryDurationOnAttempt(n) function in carelink.js is missing, which causes program errors and later data gaps, because the module remains in a wrong state after the first error:

First error due to missing funcion:

app/web.1 tick 2020-08-28T06:40:53.654Z
app/web.1 MiniMed Connect error: ReferenceError: retryDurationOnAttempt is not defined
app/web.1 stack: ReferenceError: retryDurationOnAttempt is not defined
app/web.1     at Object.fetch (/app/node_modules/minimed-connect-to-nightscout/carelink.js:231:35)
app/web.1     at process._tickCallback (internal/process/next_tick.js:68:7)

Subsequent continuous errors due to the first error:

app/web.1 tick 2020-08-28T06:41:53.654Z
app/web.1 MiniMed Connect error: Error: Request failed with status code 500
app/web.1 stack: Error: Request failed with status code 500
app/web.1     at createError (/app/node_modules/axios/lib/core/createError.js:16:15)
app/web.1     at settle (/app/node_modules/axios/lib/core/settle.js:17:12)
app/web.1     at /app/node_modules/axios-cookiejar-support/lib/interceptors/response.js:79:25
app/web.1     at new Promise (<anonymous>)
app/web.1     at responseInterceptor (/app/node_modules/axios-cookiejar-support/lib/interceptors/response.js:78:9)
app/web.1     at instance.interceptors.response.use.res (/app/node_modules/axios-cookiejar-support/lib/index.js:130:67)
app/web.1     at process._tickCallback (internal/process/next_tick.js:68:7)

The missing retryDurationOnAttempt(n) function exists in the original modified version of the carelink.js in FredMK's repo: FredMK/minimed-connect-to-nightscout