too permissive WKT parser

[komzpa]

` SELECT name, similarity(name, 'Минск') AS dist FROM planet_osm_point WHERE name % 'Минск' AND ST_DWithin(ST_Transform(way, 4326)::geography, ST_GeomFromText('POINT(27.5618791 53.902334)::geography', 4326), 50000) ORDER BY dist DESC; `

User by mistake added a cast on wrong side of ' ' and we did not get any parse error.

23:06:43 [kom] > select ST_AsEWKT(ST_GeomFromText('POINT(27.5618791 53.902334)::geography', 4326)); 
┌───────────────────────────────────────┐
│               st_asewkt               │
├───────────────────────────────────────┤
│ SRID=4326;POINT(27.5618791 53.902334) │
└───────────────────────────────────────┘
(1 row)

Time: 3,475 ms