Already in master, commit 9e7c41e

--- origsrc/xcursorgen-1.0.3/configure.ac	2009-10-16 19:41:39.000000000 -0500
+++ src/xcursorgen-1.0.3/configure.ac	2010-09-08 11:24:37.450486900 -0500
@@ -18,7 +18,7 @@ AC_PROG_INSTALL
 XORG_DEFAULT_OPTIONS
 
 # Checks for pkg-config packages
-PKG_CHECK_MODULES(XCURSORGEN, x11 xcursor libpng12)
+PKG_CHECK_MODULES(XCURSORGEN, x11 xcursor libpng >= 1.2.0)
 AC_SUBST(XCURSORGEN_CFLAGS)
 AC_SUBST(XCURSORGEN_LIBS)
 
--- origsrc/xcursorgen-1.0.3/xcursorgen.c	2009-01-22 09:09:58.000000000 -0600
+++ src/xcursorgen-1.0.3/xcursorgen.c	2010-09-08 11:25:21.721816500 -0500
@@ -196,7 +196,7 @@ load_image (struct flist *list, char *pr
       return NULL;
     }
 
-  if (setjmp (png->jmpbuf))
+  if (setjmp (png_jmpbuf(png)))
     {
       png_destroy_read_struct (&png, &info, NULL);
       return NULL;