Fix reindex command

Author: knizhnik

expected/test.out

@@ -155,4 +155,11 @@ select * from t where k = 1;
  1 |   1
 (1 row)
 
+reindex table t;
+select * from t where k = 1;
+ k | val 
+---+-----
+ 1 |   1
+(1 row)
+
 drop table t;

lsm3.c

@@ -902,7 +902,6 @@ lsm3_process_utility(PlannedStmt *plannedStmt,
 		}
 		else
 		{
-			Assert (IsA(parseTree, TruncateStmt));
 			for (int i = 0; i < 2; i++)
 			{
 				if (Lsm3Entry->top[i] == InvalidOid)

sql/test.sql

@@ -43,4 +43,7 @@ truncate table t;
 insert into t values (generate_series(1,1000000), 1);
 select * from t where k = 1;
 
+reindex table t;
+select * from t where k = 1;
+
 drop table t;