fix loop - size_t is unsigned so can not be negative

diff --git a/ext/standard/ftp_fopen_wrapper.c b/ext/standard/ftp_fopen_wrapper.c
index d6eb3b8fbccf497dab96c7f7c4b69fb2108fb132..ab75da713c70459f6309b175f8d1c4dd8d18afd6 100644 (file)
--- a/ext/standard/ftp_fopen_wrapper.c
+++ b/ext/standard/ftp_fopen_wrapper.c
@@ -644,11 +644,10 @@ static size_t php_ftp_dirstream_read(php_stream *stream, char *buf, size_t count
        efree(basename);
 
        /* Trim off trailing whitespace characters */
-       tmp_len--;
-       while (tmp_len >= 0 &&
-                       (ent->d_name[tmp_len] == '\n' || ent->d_name[tmp_len] == '\r' ||
-                        ent->d_name[tmp_len] == '\t' || ent->d_name[tmp_len] == ' ')) {
-               ent->d_name[tmp_len--] = '\0';
+       while (tmp_len > 0 &&
+                       (ent->d_name[tmp_len - 1] == '\n' || ent->d_name[tmp_len - 1] == '\r' ||
+                        ent->d_name[tmp_len - 1] == '\t' || ent->d_name[tmp_len - 1] == ' ')) {
+               ent->d_name[--tmp_len] = '\0';
        }
 
        return sizeof(php_stream_dirent);