[devel] Restored the macro definition of png_check_sig().
diff --git a/CHANGES b/CHANGES
index fb04654..80690e1 100644
--- a/CHANGES
+++ b/CHANGES
@@ -2617,6 +2617,7 @@
     read or write support (but it is probably better to check for
     the one actually required - read or write.)
   Combined multiple png_warning() calls for a single error.
+  Restored the macro definition of png_check_sig().
 
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