From bf2cad5d37a17bcc7563acb84291ea4ffcb06d0c Mon Sep 17 00:00:00 2001
From: Igor Pashev <pashev.igor@gmail.com>
Date: Fri, 6 Jan 2023 11:31:33 +0200
Subject: Fix build with libpng16

---
 lib/pngstream.cc | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

(limited to 'lib')

diff --git a/lib/pngstream.cc b/lib/pngstream.cc
index d9344b4..e3e49eb 100644
--- a/lib/pngstream.cc
+++ b/lib/pngstream.cc
@@ -83,7 +83,8 @@ namespace iscan
 #if HAVE_PNG_H
     set_error_handler (_png, _info);
 
-    if (_header && !_footer && _png->num_rows == _png->flush_rows)
+    lib->write_flush (_png);
+    if (_header && !_footer)
       {
         lib->write_end (_png, _info);
         _footer = true;
@@ -118,7 +119,7 @@ namespace iscan
         // to a "file not found" error when calling dlopen.  We just
         // dlopen the libz library explicitly to work around this.
         basic_imgstream::dlopen ("libz");
-        basic_imgstream::dlopen ("libpng12", validate);
+        basic_imgstream::dlopen ("libpng16", validate);
       }
     catch (std::runtime_error& e)
       {
-- 
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