Add an OS/2 case

toolkit/content/contentAreaUtils.js

@@ -343,6 +343,9 @@ function getTargetFile(aData, aSniffer, aContentType, aIsDocument, aSkipPrompt,
 #endif
 #ifdef XP_MACOSX
         return "UsrDsk";
+#endif
+#ifdef XP_OS2
+        return "Desk";
 #endif
         return "Home";
       }