我想为标题创建补丁以修复我的appveyor版本。我使用WinMerge创建了以下文件：
--- C:/Qt/5.3/mingw482_32/include/QtGui/qopengl.h Thu Jun 19 11:08:06 2014
+++ C:/Qt/5.3/mingw482_32/include/QtGui/qopengl2.h Sat Nov 08 11:20:32 2014
@@ -49,6 +49,7 @@
// Windows always needs this to ensure that APIENTRY gets defined
#if defined(Q_OS_WIN)
# include <QtCore/qt_windows.h>
+# undef MemoryBarrier
#endif
// Note: Mac OSX is a "controlled platform" for OpenGL ABI so we
运行patch命令时，我得到以下结果：
C:\Users\Martin\dev\TravisTest>patch -u patch_qopengl c:\Qt\5.3\mingw482_32\include\QtGui\qopengl.h
patch: **** Only garbage was found in the patch input.
出了什么问题？