bug 59312: delete temporary files even when the output stream cannot be closed (such as out of disk space IOException)

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1738848 13f79535-47bb-0310-9956-ffa450edef68

src/ooxml/java/org/apache/poi/xssf/streaming/SheetDataWriter.java

@@ -375,7 +375,12 @@ public class SheetDataWriter {
      * @return true if the file was deleted, false if it wasn't.
      */
     boolean dispose() throws IOException {
-        _out.close();
-        return _fd.delete();
+        final boolean ret;
+        try {
+            _out.close();
+        } finally {
+            ret = _fd.delete();
+        }
+        return ret;
     }
 }