kernel32: Add CreateUmsThreadContext stub.

dlls/kernel32/kernel32.spec

@@ -341,7 +341,7 @@
 @ stdcall CreateTimerQueueTimer(ptr long ptr ptr long long long)
 @ stdcall CreateToolhelp32Snapshot(long long)
 @ stdcall -arch=x86_64 CreateUmsCompletionList(ptr)
-# @ stub -arch=x86_64 CreateUmsThreadContext
+@ stdcall -arch=x86_64 CreateUmsThreadContext(ptr)
 @ stub CreateVirtualBuffer
 @ stdcall CreateWaitableTimerA(ptr long str)
 @ stdcall CreateWaitableTimerExA(ptr str long long)

dlls/kernel32/process.c

@@ -4235,6 +4235,16 @@ BOOL WINAPI CreateUmsCompletionList(PUMS_COMPLETION_LIST *list)
 }
 
 /***********************************************************************
+ *           CreateUmsThreadContext   (KERNEL32.@)
+ */
+BOOL WINAPI CreateUmsThreadContext(PUMS_CONTEXT *ctx)
+{
+    FIXME( "%p: stub\n", ctx );
+    SetLastError( ERROR_CALL_NOT_IMPLEMENTED );
+    return FALSE;
+}
+
+/***********************************************************************
  *           DeleteProcThreadAttributeList       (KERNEL32.@)
  */
 void WINAPI DeleteProcThreadAttributeList(struct _PROC_THREAD_ATTRIBUTE_LIST *list)

include/winbase.h

@@ -1877,6 +1877,7 @@ WINBASEAPI HANDLE      WINAPI CreateThread(LPSECURITY_ATTRIBUTES,SIZE_T,LPTHREAD
 WINBASEAPI HANDLE      WINAPI CreateTimerQueue(void);
 WINBASEAPI BOOL        WINAPI CreateTimerQueueTimer(PHANDLE,HANDLE,WAITORTIMERCALLBACK,PVOID,DWORD,DWORD,ULONG);
 WINBASEAPI BOOL        WINAPI CreateUmsCompletionList(PUMS_COMPLETION_LIST*);
+WINBASEAPI BOOL        WINAPI CreateUmsThreadContext(PUMS_CONTEXT*);
 WINBASEAPI HANDLE      WINAPI CreateWaitableTimerA(LPSECURITY_ATTRIBUTES,BOOL,LPCSTR);
 WINBASEAPI HANDLE      WINAPI CreateWaitableTimerW(LPSECURITY_ATTRIBUTES,BOOL,LPCWSTR);
 #define                       CreateWaitableTimer WINELIB_NAME_AW(CreateWaitableTimer)