classic mbed: bugfix can loop test

[ohagendorf]

Description

bugfixing the can loop test which failed after PR #2504

Status

READY

+--------+---------------------+-----------+----------+-------------------+--------------------+---------------+-------+
| Result | Target              | Toolchain | Test ID  | Test Description  | Elapsed Time (sec) | Timeout (sec) | Loops |
+--------+---------------------+-----------+----------+-------------------+--------------------+---------------+-------+
| OK     | NUCLEO_F746ZG[F920] | ARM       | MBED_A28 | CAN loopback test |       10.37        |       20      |  1/1  |
+--------+---------------------+-----------+----------+-------------------+--------------------+---------------+-------+

+--------+--------------------+-----------+----------+-------------------+--------------------+---------------+-------+
| Result | Target             | Toolchain | Test ID  | Test Description  | Elapsed Time (sec) | Timeout (sec) | Loops |
+--------+--------------------+-----------+----------+-------------------+--------------------+---------------+-------+
| OK     | DISCO_F746NG[F807] | ARM       | MBED_A28 | CAN loopback test |       10.38        |       20      |  1/1  |
+--------+--------------------+-----------+----------+-------------------+--------------------+---------------+-------+

+--------+--------------------+-----------+----------+-------------------+--------------------+---------------+-------+
| Result | Target             | Toolchain | Test ID  | Test Description  | Elapsed Time (sec) | Timeout (sec) | Loops |
+--------+--------------------+-----------+----------+-------------------+--------------------+---------------+-------+
| OK     | DISCO_F769NI[F94D] | ARM       | MBED_A28 | CAN loopback test |       10.37        |       20      |  1/1  |
+--------+--------------------+-----------+----------+-------------------+--------------------+---------------+-------+

Migrations

If this PR changes any APIs or behaviors, give a short description of what API users should do when this PR is merged.

NO

Related PRs

List related PRs against other branches:

PR #2504

[0xc0170]

LGTM, going to run tests

[0xc0170]

@mbed-bot: TEST

HOST_OSES=ALL
BUILD_TOOLCHAINS=ALL
TARGETS=ALL

[mbed-bot]

[Build 920]
FAILURE: Something went wrong when building and testing.

[bridadan]

@0xc0170 The last failing build should be taken care of by the merge of #2648, but this PR fixed the building of the tests mentioned above, so LGTM

[0xc0170]

@bridadan Thanks for an update