package/putty: disable gssapi

PUTTY_GSSAPI is enabled by default resulting in the following build
failure since bump to version 0.78 in commit
5673ea3:

 /home/fabrice/buildroot/output/build/putty-0.79/unix/gss.c:133:10: fatal error: gssapi/gssapi.h: No such file or directory
  133 | #include <gssapi/gssapi.h>
      |          ^~~~~~~~~~~~~~~~~

Fixes:
 - http://autobuild.buildroot.org/results/d6d06b5aa0df070c3880399e044fb3cd3a830aec

Signed-off-by: Fabrice Fontaine <[email protected]>
Signed-off-by: Peter Korsgaard <[email protected]>

package/putty/putty.mk

@@ -10,6 +10,7 @@ PUTTY_LICENSE = MIT
 PUTTY_LICENSE_FILES = LICENCE
 PUTTY_CPE_ID_VENDOR = putty
 PUTTY_DEPENDENCIES = host-pkgconf
+PUTTY_CONF_OPTS = -DPUTTY_GSSAPI=OFF
 
 ifeq ($(BR2_PACKAGE_LIBGTK3),y)
 PUTTY_DEPENDENCIES += libgtk3