Fix off-by-one-error in BusIn/Out

[pea-pod]

Description

All three Bus implementation files (BusIn.cpp, BusOut.cpp, and BusInOut.cpp) contain off-by-one-errors in the subscript operator implementations.

Only 16 In/Outs exist in the array, but the MBED_ASSERT allows the 17th index through without assertion.

Also, regarding the CLA, I submitted it less than an hour ago, so I may not be in the list yet.

Pull request type

[x] Fix
[ ] Refactor
[ ] Target update
[ ] Functionality change
[ ] Docs update
[ ] Test update
[ ] Breaking change

[cmonr]

Wow, nice catch! Out of curiosity, how did you come across this?

[deepikabhavnani]

@pea-pod good catch... 👍

[NirSonnenschein]

/morph build

[pea-pod]

Well, it all began one day when my dad met my mom…
…and that’s why I won’t go near lemurs.

To be honest, I saw it a while back when I was trying to teach myself C++, and learn how the mbed ecosystem worked.

I really like the whole concept with mbed (especially the healthy use of python) and am glad to that I can contribute.

[cmonr]

/morph build

[mbed-ci]

Build : SUCCESS

Build number : 3548
Build artifacts/logs : http://mbed-os.s3-website-eu-west-1.amazonaws.com/?prefix=builds/8606/

Triggering tests

/morph test
/morph export-build
/morph mbed2-build

[mbed-ci]

Test : SUCCESS

Build number : 3332
Test logs :http://mbed-os-logs.s3-website-us-west-1.amazonaws.com/?prefix=logs/8606/3332

[mbed-ci]

Exporter Build : FAILURE

Build number : 3156
Build artifacts/logs : http://mbed-os.s3-website-eu-west-1.amazonaws.com/?prefix=builds/exporter/8606/

[0xc0170]

/morph export-build

[0xc0170]

/morph mbed2-build

[mbed-ci]

Exporter Build : SUCCESS

Build number : 3161
Build artifacts/logs : http://mbed-os.s3-website-eu-west-1.amazonaws.com/?prefix=builds/exporter/8606/