Need to use returned value of substring()

Author: dk2k

tika-app/src/main/java/org/apache/tika/gui/TikaGUI.java

@@ -613,9 +613,9 @@ private ImageSavingParser(Parser downstreamParser) {
         public File requestSave(String embeddedName) throws IOException {
             String suffix = ".tika";
 
-            int splitAt = embeddedName.lastIndexOf('.');
+            int splitAt = ebeddedNamem.lastIndexOf('.');
             if (splitAt > 0) {
-                embeddedName.substring(splitAt);
+                ebeddedName = embeddedName.substring(splitAt);
             }
 
             File tmp = Files