[libpng16] Fix typo (extra "*/") in contrib/libtests/fakepng.c

ANNOUNCE

-Libpng 1.6.19beta03 - August 21, 2015
+Libpng 1.6.19beta03 - September 15, 2015
 
 This is not intended to be a public release.  It will be replaced
 within a few weeks by a public version or by another test version.
@@ -64,7 +64,7 @@ Version 1.6.19beta02 [August 19, 2015]
     in ANSI-C (unlike 0x80000000 in the signed case) the checking that
     occurs later can catch them (John Bowler).
 
-Version 1.6.19beta03 [August 21, 2015]
+Version 1.6.19beta03 [September 15, 2015]
   Fixed png_save_int_32 when int is not 2's complement (John Bowler).
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net

CHANGES

@@ -4440,8 +4440,7 @@ Version 1.6.1beta05 [March 1, 2013]
 Version 1.6.1beta06 [March 4, 2013]
   Better documentation of unknown handling API interactions.
   Corrected Android builds and corrected libpng.vers with symbol
-    prefixing.  It also makes those tests
-    compile and link on Android.
+    prefixing.  It also makes those tests compile and link on Android.
   Added an API png_set_option() to set optimization options externally,
     providing an alternative and general solution for the non-portable
     run-time tests used by the ARM Neon code, using the PNG_ARM_NEON option.
@@ -5346,7 +5345,7 @@ Version 1.6.19beta02 [August 19, 2015]
     in ANSI-C (unlike 0x80000000 in the signed case) the checking that
     occurs later can catch them (John Bowler).
 
-Version 1.6.19beta03 [August 21, 2015]
+Version 1.6.19beta03 [September 15, 2015]
   Fixed png_save_int_32 when int is not 2's complement (John Bowler).
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net

contrib/libtests/fakepng.c

-/* Fake a PNG - just write it out directly. */
+/* Fake a PNG - just write it out directly.
  *
  * COPYRIGHT: Written by John Cunningham Bowler, 2014.
  * To the extent possible under law, the author has waived all copyright and