coverity#705831 Dereference before null check

Change-Id: I8403e95cb452f2623a5a0bad63c54a3367b73e8c

sc/source/ui/Accessibility/AccessibleDocument.cxx

@@ -465,7 +465,7 @@ sal_Bool ScChildrenShapes::ReplaceChild (::accessibility::AccessibleShape* pCurr
         pReplacement->Init();
 
     sal_Bool bResult(false);
-    if (pCurrentChild && pReplacement)
+    if (pReplacement)
     {
         OSL_ENSURE(pCurrentChild->GetXShape().get() == pReplacement->GetXShape().get(), "XShape changes and should be inserted sorted");
         SortedShapes::iterator aItr;