Avoid painting empty rectangles because that can lead to unwanted artifacts.

git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/trunk@344330 13f79535-47bb-0310-9956-ffa450edef68

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

      * @see org.apache.fop.render.AbstractPathOrientedRenderer#fillRect(float, float, float, float)
      */
     protected void fillRect(float x, float y, float w, float h) {
-        currentStream.add(x + " " + y + " " + w + " " + h + " re f\n");
+        if (w != 0 && h != 0) {
+            currentStream.add(x + " " + y + " " + w + " " + h + " re f\n");
+        }
     }
     
     /**

src/java/org/apache/fop/render/ps/PSRenderer.java

     
     /** @see org.apache.fop.render.AbstractPathOrientedRenderer */
     protected void fillRect(float x, float y, float width, float height) {
-        try {
-            gen.defineRect(x, y, width, height);
-            gen.writeln("fill");
-        } catch (IOException ioe) {
-            handleIOTrouble(ioe);
+        if (width != 0 && height != 0) {
+            try {
+                gen.defineRect(x, y, width, height);
+                gen.writeln("fill");
+            } catch (IOException ioe) {
+                handleIOTrouble(ioe);
+            }
         }
     }