possible memory leak ?

hi!

while running simple test program under valgrind port to freebsd 5.1 I've 
got following result:

==26375== ERROR SUMMARY: 10 errors from 10 contexts (suppressed: 0 from 0)
==26375== malloc/free: in use at exit: 4121 bytes in 2 blocks.
==26375== malloc/free: 102 allocs, 100 frees, 16949 bytes allocated.
==26375== For counts of detected errors, rerun with: -v
==26375== searching for pointers to 2 not-freed blocks.
==26375== checked 2712276 bytes.
==26375== 
==26375== 
==26375== 25 bytes in 1 blocks are definitely lost in loss record 1 of 2
==26375==    at 0x3C03BA37: realloc (vg_replace_malloc.c:162)
==26375==    by 0x3C0439B1: cat_alloc (in /usr/local/lib/libesmtp.so.6)
==26375==    by 0x3C043B35: cat_shrink (in /usr/local/lib/libesmtp.so.6)
==26375==    by 0x3C04651E: read_smtp_response (in /usr/local/lib/libesmtp.so.6)
==26375== 
==26375== 
==26375== 4096 bytes in 1 blocks are still reachable in loss record 2 of 2
==26375==    at 0x3C03B177: malloc (vg_replace_malloc.c:105)
==26375==    by 0x3C103DC5: __smakebuf (in /lib/libc.so.5)
==26375==    by 0x3C103D3C: __swsetup (in /lib/libc.so.5)
==26375==    by 0x3C0F9FD9: __vfprintf (in /lib/libc.so.5)
==26375== 
==26375== LEAK SUMMARY:
==26375==    definitely lost: 25 bytes in 1 blocks.
==26375==    possibly lost:   0 bytes in 0 blocks.
==26375==    still reachable: 4096 bytes in 1 blocks.
==26375==         suppressed: 0 bytes in 0 blocks.

Is there realy leak in read_smtp_response ?

I am using libesmtp-1.0.2_2,1 from ports.

--
SY, Konstantin