When using the PageStore, opening a database failed in some cases with a…

When using the PageStore, opening a database failed in some cases with a NullPointerException if temporary tables were used (explicitly, or implicitly when using large result sets).

h2/src/main/org/h2/store/PageStore.java

@@ -1547,6 +1547,11 @@ public class PageStore implements CacheWriter {
         Index index = metaObjects.get(tableId);
         PageDataIndex scan = (PageDataIndex) index;
         Row row = scan.getRowWithKey(key);
+        if (row == null || row.getKey() != key) {
+            trace.error(null, "Entry not found: " + key + 
+                    " found instead: " + row + " - ignoring");
+            return;
+        }
         redo(tableId, row, false);
     }