Warning during PostgreSQL 9.0.4 libpq.dll build on WinXP+MinGW

Hello, Pgsql-hackers.

Today I built libpq.dll library on Windows XP using MinGW and got one
warning message:

Pablo@computer /z/pasha/postgresql-9.0.4/src/interfaces/libpq
$ make

...

gcc -O2 -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels -fno-strict-aliasing
-fw
rapv  -DFRONTEND -DUNSAFE_STAT_OK -I. -I../../../src/include -I./src/include/port/win32 -DEXEC_BACKEND
"-I../../../src/
include/port/win32" -I../../../src/port -I../../../src/port -DSO_MAJOR_VERSION=5  -c -o fe-connect.o fe-connect.c
fe-connect.c: In function 'PQconnectPoll':
fe-connect.c:1533:13: warning: unused variable 'on'

...

Is it OK?

-- 
With best wishes,Pavel                          mailto:pavel@gf.microolap.com