From dda9d41d43e767f97b4182f62f8be7e4a087932e Mon Sep 17 00:00:00 2001
From: twinaphex <libretro@gmail.com>
Date: Thu, 26 Feb 2015 07:26:02 +0100
Subject: [PATCH] Fix png_reverse_filter

---
 libretro-common/formats/png/rpng_decode_common.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libretro-common/formats/png/rpng_decode_common.h b/libretro-common/formats/png/rpng_decode_common.h
index 61f7772d5f..818d14cf10 100644
--- a/libretro-common/formats/png/rpng_decode_common.h
+++ b/libretro-common/formats/png/rpng_decode_common.h
@@ -108,6 +108,8 @@ static bool png_reverse_filter(uint32_t *data, const struct png_ihdr *ihdr,
    if (!pngp->prev_scanline || !pngp->decoded_scanline)
       GOTO_END_ERROR();
 
+   pngp->h = 0;
+
    for (; pngp->h < ihdr->height;
          pngp->h++, inflate_buf += pngp->pitch, data += ihdr->width)
    {