Fix corner case bug in numeric to_char().

Tom Lane <tgl@sss.pgh.pa.us>

Commit: 2ab199b354135f199a895c4ee61c521b03a4d321
Author: Tom Lane <tgl@sss.pgh.pa.us>
Date: 2011-09-07T21:06:33Z
Releases: 8.4.9
Fix corner case bug in numeric to_char().

Trailing-zero stripping applied by the FM specifier could strip zeroes
to the left of the decimal point, for a format with no digit positions
after the decimal point (such as "FM999.").

Reported and diagnosed by Marti Raudsepp, though I didn't use his patch.

Files