fix --ansi --pedantic compilation failure

sql/spatial.h

@@ -240,8 +240,8 @@ class Geometry
   static Geometry *create_from_wkt(Geometry_buffer *buffer,
 				   Gis_read_stream *trs, String *wkt,
 				   bool init_stream=1);
-  static int Geometry::create_from_wkb(Geometry_buffer *buffer,
-                                       const char *wkb, uint32 len, String *res);
+  static int create_from_wkb(Geometry_buffer *buffer,
+                             const char *wkb, uint32 len, String *res);
   int as_wkt(String *wkt, const char **end)
   {
     uint32 len= get_class_info()->m_name.length;