* sub.c : fixed a warning.

modules/demux/util/sub.c

@@ -2,7 +2,7 @@
  * sub.c
  *****************************************************************************
  * Copyright (C) 1999-2003 VideoLAN
- * $Id: sub.c,v 1.22 2003/08/23 22:02:45 hartman Exp $
+ * $Id: sub.c,v 1.23 2003/08/24 00:36:38 fenrir Exp $
  *
  * Authors: Laurent Aimar <fenrir@via.ecp.fr>
  *
@@ -243,7 +243,8 @@ char* sub_detect( subtitle_demux_t *p_sub, char *psz_filename)
     DIR *p_dir_handle;
     struct dirent *p_dir_afile;
     char * ppsz_sub_exts[] = { "sub", "srt", "smi", "ssa", NULL};
-    char *psz_result, *psz_basename, *psz_dir, *psz_file_noext, *psz_extension;
+    char *psz_result, *psz_basename, *psz_dir = NULL;
+    char *psz_file_noext, *psz_extension;
     int i;
     size_t i_dirlen = 0;
 
@@ -289,7 +290,7 @@ char* sub_detect( subtitle_demux_t *p_sub, char *psz_filename)
         }
         else return "";
 
-        p_dir_handle = opendir( psz_dir );
+        p_dir_handle = opendir( psz_dir ? psz_dir : "" );
         if( p_dir_handle ) {
             int i_found = 0;
 
@@ -323,7 +324,6 @@ char* sub_detect( subtitle_demux_t *p_sub, char *psz_filename)
             }
             closedir( p_dir_handle );
         }
-        
     }
     return "";
 }