t/05_sigint.t fails on Haiku

[nponeccop]

The relevant failure is:

• FAIL Test-TCP-2.19_01-TRIAL 5.26.1 Haiku

The error message is:

# $Config{sig_name}: ZERO HUP INT QUIT ILL CHLD ABRT PIPE FPE KILL STOP SEGV CONT TSTP ALRM TERM TTIN TTOU USR1 USR2 WINCH NUM21 TRAP POLL PROF SYS URG VTALRM XCPU XFSZ BUS NUM31 NUM32 RTMIN NUM34 NUM35 NUM36 NUM37 NUM38 NUM39 RTMAX NUM41 NUM42 NUM43 NUM44 NUM45 NUM46 NUM47 NUM48 NUM49 NUM50 NUM51 NUM52 NUM53 NUM54 NUM55 NUM56 NUM57 NUM58 NUM59 NUM60 NUM61 NUM62 NUM63 NUM64 
# CHILD_ERROR_NATIVE: 512
# $?: 2

#   Failed test at t/05_sigint.t line 25.

#   Failed test 'sigint'
#   at t/05_sigint.t line 26.
#          got: 'ZERO'
#     expected: 'INT'
# Looks like you failed 2 tests of 2.
t/05_sigint.t .................. 
Dubious, test returned 2 (wstat 512, 0x200)
Failed 2/2 subtests 

The version is not the official one, but signal handling is the same, and the changes there has been merged into 2.20