warning C4189: : local variable is initialized but not referenced

Change-Id: I650fab8227fd8b6aeb4fd4d420cb820aefd80271

store/source/stortree.cxx

@@ -297,8 +297,7 @@ storeError OStoreBTreeNodeObject::remove (
 void OStoreBTreeRootObject::testInvariant (char const * message)
 {
     OSL_PRECOND(m_xPage.get() != 0, "OStoreBTreeRootObject::testInvariant(): Null pointer");
-    bool result = ((m_xPage->location() - m_xPage->size()) == 0);
-    SAL_WARN_IF( !result, "store", message);
+    SAL_WARN_IF( (m_xPage->location() - m_xPage->size()) != 0, "store", message);
 }
 
 /*