fix bug in GlyphSet::DrawGlyph

regression from
    commit b157b82a
	Date:   Thu Dec 8 04:13:26 2016 +0200
    Use GlyphItem in more places

found by my new unusedvariablesmore plugin

Change-Id: I195a084a2c524cda3f87703228365432c5681133
Reviewed-on: https://gerrit.libreoffice.org/52385Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Khaled Hosny <khaledhosny@eglug.org>

vcl/unx/generic/print/glyphset.cxx

@@ -192,7 +192,7 @@ void GlyphSet::DrawGlyph(PrinterGfx& rGfx,
     OString aGlyphSetName = GetGlyphSetName(nGlyphSetID);
 
     rGfx.PSSetFont  (aGlyphSetName, RTL_TEXTENCODING_DONTKNOW);
-    rGfx.PSMoveTo   (rPoint);
+    rGfx.PSMoveTo   (aPoint);
     rGfx.PSShowGlyph(nGlyphID);
 }