Clean up comments and whitespace characters in source files

Remove all remaining "last changed" version info from source comments.
(The version control system maintains this information automatically.)

Delete the trailing whitespace characters.

1 files changed, 2 insertions, 2 deletions

diff --git a/pngread.c b/pngread.c
index 5ab922403..96996ced5 100644
--- a/pngread.c
+++ b/pngread.c
@@ -3762,13 +3762,13 @@ png_image_read_direct(png_voidp argument)
          mode = PNG_ALPHA_PNG;
          output_gamma = PNG_DEFAULT_sRGB;
       }
-      
+
       if ((change & PNG_FORMAT_FLAG_ASSOCIATED_ALPHA) != 0)
       {
          mode = PNG_ALPHA_OPTIMIZED;
          change &= ~PNG_FORMAT_FLAG_ASSOCIATED_ALPHA;
       }
-      
+
       /* If 'do_local_background' is set check for the presence of gamma
        * correction; this is part of the work-round for the libpng bug
        * described above.