Fix the PhysicalWidthDpi calculation for JPEG images.

Jira issue key: SANSELAN-70
Submitted by: Tars Joris <tars dot joris at inventivedesigners dot com>



git-svn-id: https://svn.apache.org/repos/asf/commons/proper/sanselan/trunk@1309242 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/src/main/java/org/apache/commons/sanselan/formats/jpeg/JpegImageParser.java b/src/main/java/org/apache/commons/sanselan/formats/jpeg/JpegImageParser.java
index 52e4537..76b7576 100644
--- a/src/main/java/org/apache/commons/sanselan/formats/jpeg/JpegImageParser.java
+++ b/src/main/java/org/apache/commons/sanselan/formats/jpeg/JpegImageParser.java
@@ -792,7 +792,7 @@
 
         if (units_per_inch > 0)
         {
-            PhysicalWidthDpi = (int) Math.round(x_density / units_per_inch);
+            PhysicalWidthDpi = (int) Math.round(x_density * units_per_inch);
             PhysicalWidthInch = (float) (Width / (x_density * units_per_inch));
             PhysicalHeightDpi = (int) Math.round(y_density     * units_per_inch);
             PhysicalHeightInch = (float) (Height / (y_density * units_per_inch));