(possible) fix for linux alpha jre (bug #13586)

git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/branches/fop-0_20_2-maintain@195836 13f79535-47bb-0310-9956-ffa450edef68

src/org/apache/fop/render/pdf/PDFRenderer.java

@@ -88,7 +88,7 @@ public class PDFRenderer extends PrintRenderer {
 
     PDFColor currentColor;
 
-    float currentLetterSpacing = Float.NaN;
+    float currentLetterSpacing = Float.MAX_VALUE;
 
     /**
      * true if a TJ command is left to be written