Update to last patch

git-svn-id: svn://svn.code.sf.net/p/tigervnc/code/trunk@5009 3789f03b-4d11-0410-bbf8-ca57d06f2519
diff --git a/BUILDING.txt b/BUILDING.txt
index f43680d..f53f6b0 100644
--- a/BUILDING.txt
+++ b/BUILDING.txt
@@ -115,7 +115,7 @@
 $ patch -p1 < fltk-1.3.x-clipboard-win32-fix.patch
 $ patch -p1 < fltk-1.3.x-clipboard-win32.patch
 $ patch -p1 < fltk-1.3.x-clipboard-osx.patch
-$ patch -p1 < fltk-xfixes-xcursor-cmake.patch
+$ patch -p1 < fltk-xfixes-xcursor-cmake.2.patch
 
 Ability to convert a Fl_Pixmap to a Fl_RGB_Image
 http://www.fltk.org/str.php?L2659