libpqtypes - libpqtypes: fixed memory leak on thread death in

Log Message:
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fixed memory leak on thread death in error.c:tls_free_lasterr()

Modified Files:
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libpqtypes/src:
error.c (r1.4 -> r1.5)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/libpqtypes/libpqtypes/src/error.c.diff?r1=1.4&r2=1.5)