FreeBSD/src 4a1b0a9usr.bin/unifdef/tests unifdef_test.sh

unifdef: Restore damaged test case.

The input for the hash_comment test case was damaged in a cleanup sweep.
Restore the original input and tweak it slightly so it no longer matches
the regex used in said sweep.

Sponsored by:   Klara, Inc.
Fixes: 5e3934b15a2741b2de6b217e77dc9d798d740804
DeltaFile
+3-1usr.bin/unifdef/tests/unifdef_test.sh
+3-11 files

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