[devel] Added comment in pngrutil.c about some extra parentheses.
diff --git a/pngrutil.c b/pngrutil.c
index 18c2303..2cc0b10 100644
--- a/pngrutil.c
+++ b/pngrutil.c
@@ -58,8 +58,11 @@
#ifdef PNG_READ_INT_FUNCTIONS_SUPPORTED
/* NOTE: the read macros will obscure these definitions, so that if
* PNG_USE_READ_MACROS is set the library will not use them internally,
- * but the APIs will still be available externally. The parentheses
- * around "PNGAPI function_name" are necessary because ...
+ * but the APIs will still be available externally.
+ *
+ * The parentheses around "PNGAPI function_name" in the following three
+ * functions are necessary because they allow the macros to co-exist with
+ * these (unused but exported) functions.
*/
/* Grab an unsigned 32-bit integer from a buffer in big-endian format. */
