[libpng16] Eliminated another warning from the Intel C compiler.

CHANGES

diff --git a/CHANGES b/CHANGES
index 59f4738..d92113c 100644
--- a/CHANGES
+++ b/CHANGES
@@ -4463,7 +4463,7 @@
   Use copy_if_different in the CREATE_SYMLINK macro.
 
 Version 1.6.1beta09 [March 11, 2013]
-  Eliminated a warning from the Intel C compiler. The warning is
+  Eliminated two warnings from the Intel C compiler. The warnings are
     technically valid, although a reasonable treatment of division would
     show it to be incorrect.