libpng-1.2.59rc01, 1.4.22rc01, 1.5.30rc01, and 1.6.33rc01 are available

libpng-1.2.59rc01, 1.4.22rc01, 1.5.30rc01, and 1.6.33rc01 are available from
https://ftp-osl.osuosl.org/pub/libpng/src/beta/
ftp://ftp-osl.osuosl.org/pub/libpng/src/beta/
http://libpng.download/src/beta/
and from
http://libpng.sf.net

I believe that the "uninitialized value" problems are harmless.

Version 1.2.59rc01 [September 20, 2017]
  Initialize memory allocated by png_inflate to zero, using memset, to
    stop an oss-fuzz "use of uninitialized value" detection in png_set_text_2()
    due to truncated iTXT or zTXT chunk.

version 1.4.22rc01 [September 20, 2017]
  Initialize memory allocated by png_inflate to zero, using memset, to
    stop an oss-fuzz "use of uninitialized value" detection in png_set_text_2()
    due to truncated iTXT or zTXT chunk.

Version 1.5.30rc01 [September 20, 2017]
  Initialize memory allocated by png_inflate to zero, using memset, to
    stop an oss-fuzz "use of uninitialized value" detection in png_set_text_2()
    due to truncated iTXT or zTXT chunk.

Version 1.6.33rc01 [September 20, 2017]
  Initialize memory allocated by png_inflate to zero, using memset, to
    stop an oss-fuzz "use of uninitialized value" detection in png_set_text_2()
    due to truncated iTXT or zTXT chunk.
  Initialize memory allocated by png_read_buffer to zero, using memset, to
    stop an oss-fuzz "use of uninitialized value" detection in
    png_icc_check_tag_table() due to truncated iCCP chunk.
  Removed a redundant test (suggested by "irwir" in Github issue #180).

Glenn

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