pngdec: check version before using png_get_chunk_malloc_max
pngdec: check version before using png_get_chunk_malloc_max

png_get_chunk_malloc_max / png_set_chunk_malloc_max were added in 1.4.1.

Bug: webp:505, webp:497
Change-Id: Id4e0643a7734563fec7779f7943ec760da8d276d

webmproject/libwebp,webmproject/libwebp,PKRoma/libwebp,PKRoma/libwebp,webmproject/libwebp,PKRoma/libwebp,webmproject/libwebp,PKRoma/libwebp,webmproject/libwebp,PKRoma/libwebp,PKRoma/libwebp