kernel32: add a stub for GetThreadUILanguage (try 3)

[Austin English]

-- 
-Austin
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diff --git a/dlls/kernel32/kernel32.spec b/dlls/kernel32/kernel32.spec
index 1ba7978..74ed7c8 100644
--- a/dlls/kernel32/kernel32.spec
+++ b/dlls/kernel32/kernel32.spec
@@ -658,6 +658,7 @@
 @ stdcall GetTimeFormatA(long long ptr str ptr long)
 @ stdcall GetTimeFormatW(long long ptr wstr ptr long)
 @ stdcall GetTimeZoneInformation(ptr)
+@ stdcall GetThreadUILanguage()
 @ stdcall GetUserDefaultLCID()
 @ stdcall GetUserDefaultLangID()
 @ stdcall GetUserDefaultLocaleName(ptr long)
diff --git a/dlls/kernel32/thread.c b/dlls/kernel32/thread.c
index 024e825..691ef02 100644
--- a/dlls/kernel32/thread.c
+++ b/dlls/kernel32/thread.c
@@ -777,3 +777,22 @@ DWORD WINAPI GetThreadErrorMode( void )
 {
     return rtlmode_to_win32mode( RtlGetThreadErrorMode() );
 }
+
+/***********************************************************************
+ *              GetThreadUILanguage (KERNEL32.@)
+ *
+ * Get the current thread's language identifier.
+ *
+ * PARAMS
+ *  None.
+ *
+ * RETURNS
+ *  The current thread's language identifier.
+ */
+LANGID WINAPI GetThreadUILanguage( void )
+{
+    LANGID lang;
+    NtQueryDefaultUILanguage( &lang );
+    FIXME(": stub, returning default language.\n");
+    return lang;
+}