Fix documentation about size of interval type.

It's been 16 bytes, not 12, for ages.  This was fixed in passing in HEAD
(commit 146604ec), but as a factual error it should have been back-patched.
Per gripe from Tatsuhito Kasahara.

diff --git a/doc/src/sgml/datatype.sgml b/doc/src/sgml/datatype.sgml
index 04a95dc6aa12ef1c6d73094ed57fad28aae80300..12e99869bbde584ca9e1eb1bc49848f1b7331ae5 100644 (file)
--- a/doc/src/sgml/datatype.sgml
+++ b/doc/src/sgml/datatype.sgml
@@ -1597,7 +1597,7 @@ SELECT E'\\xDEADBEEF';
        
        
         interval [ fields ] [ (p) ]
-        12 bytes
+        16 bytes
         time interval
         -178000000 years
         178000000 years