release lock even if on compaction failure

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

@@ -942,6 +942,7 @@ public class MVStore {
         stopBackgroundThread();
         closed = true;
         storeLock.lock();
+        try {
             try {
                 if (fileStore != null && shrinkIfPossible) {
                     shrinkFileIfPossible(0);
@@ -959,9 +960,11 @@ public class MVStore {
                 }
                 chunks.clear();
                 maps.clear();
+            } finally {
                 if (fileStore != null && !fileStoreIsProvided) {
                     fileStore.close();
                 }
+            }
         } finally {
             storeLock.unlock();
         }