[nogravity] Really fix libpng-1.5 patch to also work with libpng-1.2

[Hans de Goede]

commit 985e9bac13c90389bb9f0d96c6c0857afce0b77c
Author: Hans de Goede <hdegoede at redhat.com>
Date:   Tue Dec 6 19:14:50 2011 +0100

    Really fix libpng-1.5 patch to also work with libpng-1.2

 nogravity-2.00-libpng15.patch |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/nogravity-2.00-libpng15.patch b/nogravity-2.00-libpng15.patch
index b9e395e..5d04ca6 100644
--- a/nogravity-2.00-libpng15.patch
+++ b/nogravity-2.00-libpng15.patch
@@ -14,7 +14,7 @@ diff -up nogravity-2.00/rlx32/src/gx_png.c~ nogravity-2.00/rlx32/src/gx_png.c
  #ifdef _DEBUG
  	SYS_Msg("!%s", message);
  #endif
-+#ifndef LIBPNG_VERSION_12
++#if PNG_LIBPNG_VER >= 10400
 +	png_longjmp(png_ptr, 1);
 +#else
  	longjmp(png_ptr->jmpbuf, 1);
@@ -26,7 +26,7 @@ diff -up nogravity-2.00/rlx32/src/gx_png.c~ nogravity-2.00/rlx32/src/gx_png.c
  	info_ptr = png_create_info_struct(png_ptr);
  	png_read_info(png_ptr, info_ptr);  /* read all PNG info up to image data */
  
-+#ifndef LIBPNG_VERSION_12
++#if PNG_LIBPNG_VER >= 10400
 +	if (setjmp(png_jmpbuf(png_ptr)))
 +#else
  	if (setjmp(png_ptr->jmpbuf))