psqlodbc - psqlodbc: Change to use 'if' instead of an inappropriate

Log Message:
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Change to use 'if' instead of an inappropriate 'else if'.

Modified Files:
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psqlodbc:
convert.c (r1.191 -> r1.192)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/psqlodbc/psqlodbc/convert.c?r1=1.191&r2=1.192)
version.h (r1.170 -> r1.171)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/psqlodbc/psqlodbc/version.h?r1=1.170&r2=1.171)