try to explicitly disable PAM if not requested

qpopper/qpopper.spec

@@ -33,7 +33,7 @@ Class:        BASE
 Group:        Mail
 License:      GPL
 Version:      4.0.8
-Release:      20050514
+Release:      20050927
 
 #   package options
 %option       with_fsl  yes
@@ -101,6 +101,8 @@ Conflicts:    teapop
         --enable-log-login \
 %if "%{with_pam}" == "yes"
         --with-pam=qpopper \
+%else
+        --without-pam \
 %endif
 %if "%{with_fsl}" == "yes"
         --with-log-facility=LOG_USER \