Silences a clang warning:

format_pack.c:2546:30: warning: implicit conversion from 'int' to
'GLubyte' (aka 'unsigned char') changes value from 65535 to 255
[-Wconstant-conversion]
               d[i] = d[i] ? 0xffff : 0x0;
                           ~ ^~~~~~
---
 src/mesa/main/format_pack.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/src/mesa/main/format_pack.c b/src/mesa/main/format_pack.c
index 85b2c69..9df9b14 100644
--- a/src/mesa/main/format_pack.c
+++ b/src/mesa/main/format_pack.c
@@ -2543,7 +2543,7 @@ _mesa_pack_colormask(gl_format format, const
GLubyte colorMask[4], void *dst)
          if (bits == 8) {
             GLubyte *d = (GLubyte *) dst;
             for (i = 0; i < bytes; i++) {
-               d[i] = d[i] ? 0xffff : 0x0;
+               d[i] = d[i] ? 0xff : 0x0;
             }
          }
          else if (bits == 16) {
-- 
1.7.4.1
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