Minimize memory allocation for void (but not null) value.

diff --git a/contrib/tsearch2/tsvector.c b/contrib/tsearch2/tsvector.c
index ea50421eb73bed05e1dbf2b99453f4ab39cb6a8b..5670c0cf5fc8414f20e153f81e2ce547b25b9427 100644 (file)
--- a/contrib/tsearch2/tsvector.c
+++ b/contrib/tsearch2/tsvector.c
@@ -451,6 +451,8 @@ tsvector_in(PG_FUNCTION_ARGS)
 
        if (len > 0)
                len = uniqueentry(arr, len, tmpbuf, &buflen);
+       else
+               buflen=0;
        totallen = CALCDATASIZE(len, buflen);
        in = (tsvector *) palloc(totallen);
        memset(in, 0, totallen);