SDL: cleanup IME_UpdateInputLocale

From 32c7d5d3522e43af2a5cffcd5f824f6a956b2ec8 Mon Sep 17 00:00:00 2001
From: pionere <[EMAIL REDACTED]>
Date: Tue, 18 Jan 2022 17:44:51 +0100
Subject: [PATCH] cleanup IME_UpdateInputLocale - do not store the HKL in a
 static variable - always set the ime_candvertical value in case the HKL is
 changed

---
 src/video/windows/SDL_windowskeyboard.c | 23 +++++------------------
 1 file changed, 5 insertions(+), 18 deletions(-)

diff --git a/src/video/windows/SDL_windowskeyboard.c b/src/video/windows/SDL_windowskeyboard.c
index c1237d50b39..c68fe105dbd 100644
--- a/src/video/windows/SDL_windowskeyboard.c
+++ b/src/video/windows/SDL_windowskeyboard.c
@@ -712,26 +712,13 @@ IME_SetWindow(SDL_VideoData* videodata, HWND hwnd)
 static void
 IME_UpdateInputLocale(SDL_VideoData *videodata)
 {
-    static HKL hklprev = 0;
-    videodata->ime_hkl = GetKeyboardLayout(0);
-    if (hklprev == videodata->ime_hkl)
-        return;
+    HKL hklnext = GetKeyboardLayout(0);
 
-    hklprev = videodata->ime_hkl;
-    switch (PRIMLANG()) {
-    case LANG_CHINESE:
-        videodata->ime_candvertical = SDL_TRUE;
-        if (SUBLANG() == SUBLANG_CHINESE_SIMPLIFIED)
-            videodata->ime_candvertical = SDL_FALSE;
+    if (hklnext == videodata->ime_hkl)
+        return;
 
-        break;
-    case LANG_JAPANESE:
-        videodata->ime_candvertical = SDL_TRUE;
-        break;
-    case LANG_KOREAN:
-        videodata->ime_candvertical = SDL_FALSE;
-        break;
-    }
+    videodata->ime_hkl = hklnext;
+    videodata->ime_candvertical = (PRIMLANG() == LANG_KOREAN || LANG() == LANG_CHS) ? SDL_FALSE : SDL_TRUE;
 }
 
 static void