Fix build failures

Author: poojanilangekar

src/catalog/schema.cpp

@@ -218,7 +218,7 @@ Schema *Schema::AppendSchema(const Schema *first, std::vector<oid_t> &first_set,
 }
 
 // Append given schemas.
-Schema *Schema::AppendSchemaList(std::vector<const Schema> &schema_list) {
+Schema *Schema::AppendSchemaList(std::vector<Schema> &schema_list) {
   // All we do here is convert vector<Schema> to vector<Schema *>.
   // This is a convenience function.
   std::vector<const Schema *> schema_ptr_list;

src/include/catalog/schema.h

@@ -69,7 +69,7 @@ class Schema : public Printable {
                               const Schema *second, std::vector<oid_t> &second_set);
 
   // Append given schemas.
-  static Schema *AppendSchemaList(std::vector<const Schema> &schema_list);
+  static Schema *AppendSchemaList(std::vector<Schema> &schema_list);
 
   // Append given schemas.
   static Schema *AppendSchemaPtrList(const std::vector<const Schema *> &schema_list);

src/storage/data_table.cpp

@@ -1241,8 +1241,8 @@ void SetTransformedTileGroup(storage::TileGroup *orig_tile_group,
   // Check that both tile groups have the same schema
   // Currently done by checking that the number of columns are equal
   // TODO Pooja: Handle schena equality for multiple schema versions.
-  auto new_column_count = new_layout.GetColumnCount();
-  auto orig_column_count = orig_layout.GetColumnCount();
+  UNUSED_ATTRIBUTE auto new_column_count = new_layout.GetColumnCount();
+  UNUSED_ATTRIBUTE auto orig_column_count = orig_layout.GetColumnCount();
   PELOTON_ASSERT(new_column_count == orig_column_count);
 
   oid_t orig_tile_offset, orig_tile_column_offset;