[OpenImageIO/f16] Fix libpng-devel build requirement.

[Richard Shaw]

commit f09b0b1ca8fd9e6298c6f6a7d722663ed95f2b78
Author: Richard M. Shaw <hobbes1069 at gmail.com>
Date:   Tue Mar 13 14:25:29 2012 -0500

    Fix libpng-devel build requirement.

 OpenImageIO.spec |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/OpenImageIO.spec b/OpenImageIO.spec
index 79b7939..4eca54c 100644
--- a/OpenImageIO.spec
+++ b/OpenImageIO.spec
@@ -15,7 +15,7 @@ Patch3:         OpenImageIO-0.10.2-Z_BEST_COMPRESSION.patch
 
 BuildRequires:  boost-devel glew-devel qt-devel OpenEXR-devel ilmbase-devel
 BuildRequires:  python2-devel txt2man
-BuildRequires:  libpng libtiff-devel
+BuildRequires:  libpng-devel libtiff-devel
 BuildRequires:  zlib-devel jasper-devel
 BuildRequires:  pugixml-devel
 BuildRequires:  tbb-devel