gentoo-overlay/x11-misc/fbdesk/files/fbdesk-1.4.1-libpng14.patch

--- a/src/FbTk/ImagePNG.cc
+++ b/src/FbTk/ImagePNG.cc
@@ -88,7 +88,7 @@
     // check header
     unsigned char tag[4];
     fread(tag, 1, 4, fp);
-    if (!png_check_sig(tag, 4)) {
+    if (png_sig_cmp(tag, 0, 4)) {
         fclose(fp);
         return 0;
     }