Silence create_index regression test failure.

The expected output contained some floating point values which might get
rounded slightly differently on different platforms. The exact output isn't
very interesting in this test, so just round it.

Per buildfarm member rover_firefly.

src/test/regress/expected/create_index.out

@@ -387,19 +387,19 @@ SELECT * FROM gpolygon_tbl ORDER BY f1 <-> '(0,0)'::point LIMIT 10;
  ((2424,81),(2424,160),(2424,160),(2424,81))
 (10 rows)
 
-SELECT * FROM gcircle_tbl ORDER BY f1 <-> '(200,300)'::point LIMIT 10;
-                f1                 
------------------------------------
- <(288.5,407),68.2367203197809>
- <(710.5,175),49.9624859269432>
- <(323.5,1433),51.4417145903983>
- <(927.5,1178.5),30.4384625104489>
- <(1395,373.5),57.1948424248201>
- <(1555.5,1007),52.7091073724456>
- <(217,1835),44.5982062419555>
- <(489,2421.5),22.3886131772381>
- <(2424,120.5),39.5>
- <(751.5,2655),20.4022057631032>
+SELECT circle_center(f1), round(radius(f1)) as radius FROM gcircle_tbl ORDER BY f1 <-> '(200,300)'::point LIMIT 10;
+ circle_center  | radius 
+----------------+--------
+ (288.5,407)    |     68
+ (710.5,175)    |     50
+ (323.5,1433)   |     51
+ (927.5,1178.5) |     30
+ (1395,373.5)   |     57
+ (1555.5,1007)  |     53
+ (217,1835)     |     45
+ (489,2421.5)   |     22
+ (2424,120.5)   |     40
+ (751.5,2655)   |     20
 (10 rows)
 
 -- Now check the results from plain indexscan

src/test/regress/sql/create_index.sql

@@ -226,7 +226,7 @@ SELECT count(*) FROM radix_text_tbl WHERE t ~>~  'Worth
 
 SELECT * FROM gpolygon_tbl ORDER BY f1 <-> '(0,0)'::point LIMIT 10;
 
-SELECT * FROM gcircle_tbl ORDER BY f1 <-> '(200,300)'::point LIMIT 10;
+SELECT circle_center(f1), round(radius(f1)) as radius FROM gcircle_tbl ORDER BY f1 <-> '(200,300)'::point LIMIT 10;
 
 -- Now check the results from plain indexscan
 SET enable_seqscan = OFF;