#29073: Fix shellcheck warnings in linux-tor-prio.sh (2)

[rl1987]

https://trac.torproject.org/projects/tor/ticket/29073

[coveralls]

Pull Request Test Coverage Report for Build 4265

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 27 unchanged lines in 4 files lost coverage.
• Overall coverage decreased (-0.04%) to 61.721%

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Files with Coverage Reduction	New Missed Lines	%
src/core/or/relay.c	1	49.33%
src/lib/net/buffers_net.c	6	75.9%
src/lib/log/log.c	10	72.14%
src/lib/net/socket.c	10	46.91%

Totals
Change from base Build 4254:	-0.04%
Covered Lines:	45309
Relevant Lines:	73409

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💛 - Coveralls

[teor2345]

We'll merge #781 and remove this script, rather than fixing it.