There is unfortunately not a patch available for this issue.

git-svn-id: svn://svn.code.sf.net/p/tigervnc/code/trunk@5013 3789f03b-4d11-0410-bbf8-ca57d06f2519

BUILDING.txt

@@ -138,10 +138,6 @@ http://fltk.org/str.php?L2860
 $ patch -p1 < fltk-1.3.x-screen_num.patch
 $ patch -p1 < fltk-1_v2.3.x-multihead.patch
 
-Correct libXrandr dlopen
-http://www.fltk.org/str.php?L2877
-$ patch -p1 < fltk-1.3.x-libxrandr.patch
-
 3. Use CMake to build FLTK using the same procedures described below for
    building TigerVNC.  The recipes in the "Build Recipes" section also apply.