Bug 60042: Add sample file to check if this bug is fixed via bug 55791 already.

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1787664 13f79535-47bb-0310-9956-ffa450edef68

src/ooxml/testcases/org/apache/poi/xslf/TestXSLFBugs.java

@@ -624,4 +624,11 @@ public class TestXSLFBugs {
 
         ppt.close();
     }
+
+    @Test
+    public void test60042() {
+        XMLSlideShow ppt = XSLFTestDataSamples.openSampleDocument("60042.pptx");
+        ppt.removeSlide(0);
+        ppt.createSlide();
+    }
 }