Use ICONV_NONE instead of (iconv_t) -1

diff --git a/tig.c b/tig.c
index 4f43681..df2ede1 100644 (file)
--- a/tig.c
+++ b/tig.c
@@ -3416,7 +3416,7 @@ main(int argc, char *argv[])
 
        if (*opt_codeset && strcmp(opt_codeset, opt_encoding)) {
                opt_iconv = iconv_open(opt_codeset, opt_encoding);
-               if (opt_iconv == (iconv_t) -1)
+               if (opt_iconv == ICONV_NONE)
                        die("Failed to initialize character set conversion");
        }