Add stub for LockFileEx (KERNEL32.513).
diff --git a/include/winbase.h b/include/winbase.h
index 2579ad7..282c2a9 100644
--- a/include/winbase.h
+++ b/include/winbase.h
@@ -1369,6 +1369,7 @@
BOOL WINAPI IsValidLocale(DWORD,DWORD);
BOOL WINAPI LocalFileTimeToFileTime(const FILETIME*,LPFILETIME);
BOOL WINAPI LockFile(HFILE,DWORD,DWORD,DWORD,DWORD);
+BOOL WINAPI LockFileEx(HANDLE, DWORD, DWORD, DWORD, DWORD, LPOVERLAPPED);
HMODULE WINAPI MapHModuleSL(HMODULE16);
HMODULE16 WINAPI MapHModuleLS(HMODULE);
SEGPTR WINAPI MapLS(LPVOID);