[ICU-7411] Revert change in tagged 1.3.0 version.  This is fixed in the trunk.

X-SVN-Rev: 28198
diff --git a/tzdata/tzu/src/com/ibm/icu/dev/tool/tzu/ICUFile.java b/tzdata/tzu/src/com/ibm/icu/dev/tool/tzu/ICUFile.java
index 5bd69cd..7369603 100644
--- a/tzdata/tzu/src/com/ibm/icu/dev/tool/tzu/ICUFile.java
+++ b/tzdata/tzu/src/com/ibm/icu/dev/tool/tzu/ICUFile.java
@@ -422,7 +422,7 @@
             }
 
             // get the version of the cached zoneinfo.res file
-            String zVer = findFileTZVersion(new File(insertURLs[0].toString().substring(insertURLs[0].toString().indexOf('/', 0), insertURLs[0].toString().length())), logger);
+            String zVer = findFileTZVersion(new File(insertURLs[0].toString().substring(insertURLs[0].toString().indexOf('/', 0) + 1, insertURLs[0].toString().length())), logger);
 
             // Use the appropriate version of the supplemental data resource.  This res file is only
             // needed for ICU versions 3.8.x, 4.0.x, 4.2.x and using a time zone version of 2009p or later.