pngcp minimal configuration changes

Corrections for the pngcp minimal configuration in libpng 1.7 and corrections to
the libpng 1.7 code to fix bugs revealed by the reduced configuration.

Signed-off-by: John Bowler <jbowler@acm.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/png.c b/png.c
index 44caee6ea..8b7cd6fda 100644
--- a/png.c
+++ b/png.c
@@ -186,7 +186,7 @@ png_user_version_check(png_structrp png_ptr, png_const_charp user_png_ver)
    {
       int library_match = 1;
       int i = -1;
-      int found_dots = 0;
+      unsigned int found_dots = 0;
 
       do
       {