Fix problem with negation in TextView/libswoc #92
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ABS_MIN is 9223372036854775808
intmax_t(ABS_MIN) is -9223372036854775808
negation of that is overflow for intmax_t data type with max value of 9223372036854775807
And I think that's not the intention as well.
So I need to make this change.
This is needed for the problem found in oss fuzz - https://oss-fuzz.com/testcase-detail/5196561539530752
Also as suggested in apache/trafficserver#10971, I am creating this PR.