kuser/kinit: NO_AFS unused-but-set-variable

When NO_AFS is defined, 'ret' is set but unused resulting in a build
failure on macOS.

  error: variable 'ret' set but not used [-Werror,-Wunused-but-set-variable

kuser/kinit.c

@@ -976,10 +976,12 @@ renew_func(void *ptr)
     expire = ticket_lifetime(ctx->context, ctx->ccache, ctx->principal,
 			     server_str, &renew_expire);
 
+    if (ret == 0 && server_str == NULL) {
 #ifndef NO_AFS
-    if (ret == 0 && server_str == NULL && do_afslog && k_hasafs())
-	krb5_afslog(ctx->context, ctx->ccache, NULL, NULL);
+	if (do_afslog && k_hasafs())
+	    krb5_afslog(ctx->context, ctx->ccache, NULL, NULL);
 #endif
+    }
 
     update_siginfo_msg(expire, server_str);