don't export private symbols

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@27024 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

diff --git a/src/png/pngerror.c b/src/png/pngerror.c
index f66e90000dee38b271e999de9c81221f80cbc62c..3dd1dae014fc8e11feeba96325b856144a53dc7f 100644 (file)
--- a/src/png/pngerror.c
+++ b/src/png/pngerror.c
@@ -109,9 +109,9 @@ static PNG_CONST char png_digit[16] = {
    '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E',
    'F' };
 
-size_t wxstrnlen( const char *s, size_t maxlen )
+static size_t wxstrnlen( const char *s, size_t maxlen )
 {
-       int i ;
+       size_t i ;
        for ( i = 0 ; s[i] && i < maxlen ; ++i )
                ;
        return i ;