tree 2e2d26e2e5ab304dc70aeb42f8229995b92fdff2
parent c9072afe397355f62f36599cce35f4bcfba2a72d
author Matthieu Baerts (NGI0) <matttbe@kernel.org> 1707995655 +0100
committer Matthieu Baerts (NGI0) <matttbe@kernel.org> 1708012398 +0100
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selftests: mptcp: diag: fix bash warnings on older kernels

Since the 'Fixes' commit mentioned below, the command that is executed
in __chk_nr() helper can return nothing if the feature is not supported.
This is the case when the MPTCP CURRESTAB counter is not supported.

To avoid this warning ...

  ./diag.sh: line 65: [: !=: unary operator expected

... we just need to surround '$nr' with double quotes, to support an
empty string when the feature is not supported.

Fixes: 81ab772819da ("selftests: mptcp: diag: check CURRESTAB counters")
Reviewed-by: Geliang Tang <geliang@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>