pgsql: Simplify some conditions related to [LW]Lock in generate-wait_ev

Simplify some conditions related to [LW]Lock in generate-wait_event_types.pl

The first check on the enum values was not necessary as the values set
in wait_event_names.txt for the classes LWLock and Lock were able to
satisfy the check.  The second check when generating the C and header
files is now based on a match of the class names, making it simpler to
understand.

Author: Masahiro Ikeda, Michael Paquier
Discussion: https://postgr.es/m/eaf82a85c0ef1b55dc3b651d3f7b867a@oss.nttdata.com

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/c17164aec88cfa2d1b949e76e05e4ebafd74936c

Modified Files
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src/backend/utils/activity/generate-wait_event_types.pl | 11 +++--------
1 file changed, 3 insertions(+), 8 deletions(-)