Fix bug in svg device driver introduced by recent floating-point width change.
Fix bug in svg device driver introduced by recent floating-point
width change.

-width has no effect on this device driver (for unknown reasons) so
I tested this svg change using a call to plwidth(0.2) after plot initialization, and
that gave good thin-line results.



svn path=/trunk/; revision=12291

FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot