handle any exception when failing to snapshot

modules/elasticsearch/src/main/java/org/elasticsearch/index/translog/fs/FsTranslog.java

@@ -202,7 +202,7 @@ public class FsTranslog extends AbstractIndexShardComponent implements Translog
                     newSnapshot.seekForward(snapshot.position());
                     return newSnapshot;
                 }
-            } catch (IOException e) {
+            } catch (Exception e) {
                 throw new TranslogException(shardId, "Failed to snapshot", e);
             }
         }