[OpenColorIO] Fix cmake28 conditional.

[Richard Shaw]

commit 893cf597cdb9e5d2f6ff89926e45f219e7f2f5b6
Author: Richard M. Shaw <hobbes1069 at gmail.com>
Date:   Sun Jul 22 15:50:21 2012 -0500

    Fix cmake28 conditional.

 OpenColorIO.spec |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/OpenColorIO.spec b/OpenColorIO.spec
index 903f43e..4f3255f 100644
--- a/OpenColorIO.spec
+++ b/OpenColorIO.spec
@@ -27,7 +27,11 @@ Patch0:         OpenColorIO-1.0.7-pylib_no_soname.patch
 Patch1:         OpenColorIO-1.0.7-docfix.patch
 
 # Utilities
+%if 0%{?el6}
 BuildRequires:  cmake28
+%else
+BuildRequires:  cmake
+%endif
 BuildRequires:  help2man
 
 # Libraries