Page store: the recover tool sometimes generated a script file that contained duplicate data.

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

@@ -110,7 +110,7 @@ public class PageFreeList extends Page {
 
     int getLastUsed() {
         int last = used.getLastSetBit();
-        return last == -1 ? -1 : last + getPos();
+        return last == 0 ? -1 : last + getPos();
     }
 
     /**

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

@@ -827,7 +827,6 @@ public class PageLog {
         if (writeBuffer.length() == 0) {
             return writeBuffer;
         }
-//new Error("recurse").printStackTrace();
         return store.createData();
     }