winsys/xlib: Add cygwin to SConscript.

Fixes SCons NameError exception on Cygwin.

diff --git a/src/gallium/winsys/sw/xlib/SConscript b/src/gallium/winsys/sw/xlib/SConscript
index 2af6153b4c7f31864eb4babb2b7b5d2c1aca6e51..df01a9ec2bfd0524afd9537fc14bcecaf499f4ea 100644 (file)
--- a/src/gallium/winsys/sw/xlib/SConscript
+++ b/src/gallium/winsys/sw/xlib/SConscript
@@ -4,7 +4,7 @@
 
 Import('*')
 
-if env['platform'] == 'linux':
+if env['platform'] in ('cygwin', 'linux'):
 
     env = env.Clone()