package/ngircd: fix pam support

Fix type introduced by
https://git.buildroot.net/buildroot/commit/?id=13755ca3056e4793e483c2ec634c06ac017088d2

Fixes
http://autobuild.buildroot.net/results/461/461fa08ef11dc4ae8074a2d634138e4fcfaa8d16/

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/ngircd/ngircd.mk

@@ -14,7 +14,7 @@ ifeq ($(BR2_PACKAGE_LINUX_PAM),y)
 NGIRCD_CONF_OPTS += --with-pam=$(STAGING_DIR)/usr
 NGIRCD_DEPENDENCIES += linux-pam
 else
-NGIRCD_CONF_OPTS += --with-pam
+NGIRCD_CONF_OPTS += --without-pam
 endif
 
 ifeq ($(BR2_PACKAGE_OPENSSL),y)