Possible space leak from calloc call?

[Julian Seward (Intl Vendor)]

Using Feb 2001 in RedHat 7.1, loading the Prelude and then
exiting:

=3D=3D6469=3D=3D 48000 bytes in 1 blocks are possibly lost in loss =
record 41 of
41
=3D=3D6469=3D=3D    at 0x4004E458: calloc
=3D=3D6469=3D=3D    by 0x80818B3: expandSubst (subst.c:161)
=3D=3D6469=3D=3D    by 0x808195F: newTyvars (subst.c:184)
=3D=3D6469=3D=3D    by 0x80618A6: initTCKind (static.c:2690)

I don't know if this is either significant, or avoidable.

J