Imported from libpng-1.2.2beta1.tar
diff --git a/pngread.c b/pngread.c
index c47df62..9a6169c 100644
--- a/pngread.c
+++ b/pngread.c
@@ -1,7 +1,7 @@
 
 /* pngread.c - read a PNG file
  *
- * libpng 1.2.1 - December 12, 2001
+ * libpng 1.2.2beta1 - February 22, 2002
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2001 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -45,11 +45,12 @@
 
    png_debug(1, "in png_create_read_struct\n");
 #ifdef PNG_USER_MEM_SUPPORTED
-   if ((png_ptr = (png_structp)png_create_struct_2(PNG_STRUCT_PNG,
-      (png_malloc_ptr)malloc_fn, (png_voidp)mem_ptr)) == NULL)
+   png_ptr = (png_structp)png_create_struct_2(PNG_STRUCT_PNG,
+      (png_malloc_ptr)malloc_fn, (png_voidp)mem_ptr);
 #else
-   if ((png_ptr = (png_structp)png_create_struct(PNG_STRUCT_PNG)) == NULL)
+   png_ptr = (png_structp)png_create_struct(PNG_STRUCT_PNG);
 #endif
+   if (png_ptr == NULL)
       return (NULL);
 
 #ifdef PNG_ASSEMBLER_CODE_SUPPORTED
@@ -767,7 +768,7 @@
  * not called png_set_interlace_handling(), the display_row buffer will
  * be ignored, so pass NULL to it.
  *
- * [*] png_handle_alpha() does not exist yet, as of libpng version 1.2.1
+ * [*] png_handle_alpha() does not exist yet, as of libpng version 1.2.2beta1
  */
 
 void PNGAPI
@@ -816,7 +817,7 @@
  * only call this function once.  If you desire to have an image for
  * each pass of a interlaced image, use png_read_rows() instead.
  *
- * [*] png_handle_alpha() does not exist yet, as of libpng version 1.2.1
+ * [*] png_handle_alpha() does not exist yet, as of libpng version 1.2.2beta1
  */
 void PNGAPI
 png_read_image(png_structp png_ptr, png_bytepp image)