one more fix related to Bugzilla 54407

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1437306 13f79535-47bb-0310-9956-ffa450edef68

diff --git a/src/ooxml/java/org/apache/poi/xslf/usermodel/XSLFSheet.java b/src/ooxml/java/org/apache/poi/xslf/usermodel/XSLFSheet.java
index ddf78ba9a492473f49cfe25357a5393158808103..35100d1194938fc075ae4774812cab5f9c0e7a66 100644 (file)
--- a/src/ooxml/java/org/apache/poi/xslf/usermodel/XSLFSheet.java
+++ b/src/ooxml/java/org/apache/poi/xslf/usermodel/XSLFSheet.java
@@ -346,6 +346,7 @@ public abstract class XSLFSheet extends POIXMLDocumentPart implements XSLFShapeC
         _spTree = null;
         _drawing = null;
         _spTree = null;
+        _placeholders = null;
 
         // recursively update each shape
         List<XSLFShape> tgtShapes = getShapeList();