Index: src/ooxml/java/org/apache/poi/xssf/streaming/SXSSFSheet.java
IDEA additional info:
Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
<+>UTF-8
===================================================================
--- src/ooxml/java/org/apache/poi/xssf/streaming/SXSSFSheet.java	(revision 9e5790d00453160d6072f91989e769bd1c87f30f)
+++ src/ooxml/java/org/apache/poi/xssf/streaming/SXSSFSheet.java	(date 1604708530365)
@@ -1908,10 +1908,15 @@
      * @return true if the file was deleted, false if it wasn't.
      */
     boolean dispose() throws IOException {
-        if (!allFlushed) {
-            flushRows();
+        boolean ret;
+        try {
+            if (!allFlushed) {
+                flushRows();
+            }
+        } finally {
+            ret = _writer == null || _writer.dispose();
         }
-        return _writer == null || _writer.dispose();
+        return ret;
     }
 
     @Override