deserialize using get_data_size(), which refers to blob.data()'s length,

instead of using msg.meta.size, which refers to the entire blob's length

fixes #752

src/ledger.rs

@@ -57,7 +57,7 @@ pub fn reconstruct_entries_from_blobs(blobs: VecDeque<SharedBlob>) -> bincode::R
     for blob in blobs {
         let entry = {
             let msg = blob.read().unwrap();
-            deserialize(&msg.data()[..msg.meta.size])
+            deserialize(&msg.data()[..msg.get_data_size().unwrap() as usize])
         };
 
         match entry {