leveldb: fix testDB_IterTriggeredCompaction() keyspace size asserts
diff --git a/leveldb/db_test.go b/leveldb/db_test.go
index e8237cb..38bfbf1 100644
--- a/leveldb/db_test.go
+++ b/leveldb/db_test.go
@@ -418,7 +418,7 @@
 func (h *dbHarness) sizeAssert(start, limit string, low, hi uint64) {
 	sz := h.sizeOf(start, limit)
 	if sz < low || sz > hi {
-		h.t.Errorf("sizeof %q to %q not in range, want %d - %d, got %d",
+		h.t.Errorf("sizeOf %q to %q not in range, want %d - %d, got %d",
 			shorten(start), shorten(limit), low, hi, sz)
 	}
 }
@@ -2646,10 +2646,14 @@
 		size0 := h.sizeOf(startKey, limitKey)
 		size1 := h.sizeOf(limitKey, maxKey)
 		t.Logf("#%03d size %s [rest %s]", r, shortenb(int(size0)), shortenb(int(size1)))
-		if size0 < initialSize0 {
+		if size0 < initialSize0/10 {
 			break
 		}
 	}
+
+	if initialSize1 > 0 {
+		h.sizeAssert(limitKey, maxKey, initialSize1/4-opt.MiB, initialSize1+opt.MiB)
+	}
 }
 
 func TestDB_IterTriggeredCompaction(t *testing.T) {