Re: [Patch] timezone/zic.c: Fix file handle leak in dolink()

Furthermore, I noticed that some of the test code in `contrib/pg_trgm/trgm_regexp.c` does not check the return value of
the`fopen()` call. 
 
I'm not sure if it's necessary to make the modification.

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Regards,
Man Zeng
www.openhalo.org