Proper placement of Transaction span.end()

Author: odeke-em

src/database.ts

@@ -874,7 +874,6 @@ class Database extends common.GrpcServiceObject {
               return;
             }
             span.addEvent('Using Session', {'session.id': session?.id});
-            span.end();
             callback!(null, transaction, resp!);
           });
         });
@@ -2214,10 +2213,11 @@ class Database extends common.GrpcServiceObject {
             'session.id': session?.id,
           });
           setSpanError(span, err);
+          span.end();
         } else {
           setSpanError(span, err);
+          span.end();
         }
-        span.end();
         cb!(err as grpc.ServiceError | null, transaction);
       });
     });