SDL: waylandevents: prevent segfault if xkb compose table is not found

From 402b86f2a88b5ee3e112dbde2ec232ee5f36572f Mon Sep 17 00:00:00 2001
From: Aleksey Rybalkin <[EMAIL REDACTED]>
Date: Sun, 15 Aug 2021 14:41:56 +0300
Subject: [PATCH] waylandevents: prevent segfault if xkb compose table is not
 found

this can happen e.g. on pure wayland system where there is no X11
locales for xkbcommon to find.
---
 src/video/wayland/SDL_waylandevents.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/video/wayland/SDL_waylandevents.c b/src/video/wayland/SDL_waylandevents.c
index c93dcc1267..f021c3adc8 100644
--- a/src/video/wayland/SDL_waylandevents.c
+++ b/src/video/wayland/SDL_waylandevents.c
@@ -793,7 +793,7 @@ keyboard_input_get_text(char text[8], const struct SDL_WaylandInput *input, uint
     }
 #endif
 
-    if (WAYLAND_xkb_compose_state_feed(input->xkb.compose_state, sym) == XKB_COMPOSE_FEED_ACCEPTED) {
+    if (input->xkb.compose_state && WAYLAND_xkb_compose_state_feed(input->xkb.compose_state, sym) == XKB_COMPOSE_FEED_ACCEPTED) {
         switch(WAYLAND_xkb_compose_state_get_status(input->xkb.compose_state)) {
             case XKB_COMPOSE_COMPOSING:
                 *handled_by_ime = SDL_TRUE;