MVStore bugfix

h2/src/main/org/h2/mvstore/MVStore.java

@@ -887,6 +887,12 @@ public class MVStore {
         }
         buff.limit(length);
 
+        // free up the space of unused chunks now
+        for (Chunk x : removedChunks) {
+            int len = MathUtils.roundUpInt(x.length, BLOCK_SIZE) + BLOCK_SIZE;
+            fileStore.free(x.start, len);
+        }
+
         long end = getEndPosition();
         long filePos;
         if (reuseSpace) {
@@ -897,12 +903,6 @@ public class MVStore {
         }
         boolean storeAtEndOfFile = filePos + length >= end;
 
-        // free up the space of unused chunks now
-        for (Chunk x : removedChunks) {
-            int len = MathUtils.roundUpInt(x.length, BLOCK_SIZE) + BLOCK_SIZE;
-            fileStore.free(x.start, len);
-        }
-
         c.start = filePos;
         c.length = chunkLength;
         c.metaRootPos = meta.getRoot().getPos();