[KPhotoAlbum] One more small change

[Robert L Krawitz]

This change to InfoBox.cpp starts out the info box width at something
more reasonable when the file name is being displayed.

Index: Viewer/InfoBox.cpp
===================================================================
--- Viewer/InfoBox.cpp  (revision 559977)
+++ Viewer/InfoBox.cpp  (working copy)
@@ -60,7 +60,7 @@
 
 void Viewer::InfoBox::setSize()
 {
-    int width = 200;
+    int width = contentsWidth();
     int height = 0, h2;
 
     do {