fix file check and avoid segfault

diff --git a/ext/fileinfo/fileinfo.c b/ext/fileinfo/fileinfo.c
index 164b2a241984c2a98e69085c2d78548130141258..5b89dee6c5997cc4c8455ce11ceef075642bcd3d 100644 (file)
--- a/ext/fileinfo/fileinfo.c
+++ b/ext/fileinfo/fileinfo.c
@@ -316,7 +316,7 @@ PHP_FUNCTION(finfo_open)
                RETURN_FALSE;
        }
 
-       if (*file) { /* user specified filed, perform open_basedir checks */
+       if (file && *file) { /* user specified file, perform open_basedir checks */
                if (!VCWD_REALPATH(file, resolved_path)) {
                        RETURN_FALSE;
                }