---
 subversion/libsvn_subr/cmdline.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/subversion/libsvn_subr/cmdline.c
+++ b/subversion/libsvn_subr/cmdline.c
@@ -82,6 +82,7 @@ svn_cmdline_init(const char *progname, F
 #pragma convert(1208)
 #endif
       {
+  if (error_stream)
         fprintf(error_stream, "%s: error: cannot open '/dev/null'\n",
                 progname);
         return EXIT_FAILURE;
@@ -92,6 +93,7 @@ svn_cmdline_init(const char *progname, F
   /* Ignore any errors encountered while attempting to change stream
      buffering, as the streams should retain their default buffering
      modes. */
+  if (error_stream)
   setvbuf(error_stream, NULL, _IONBF, 0);
 #ifndef WIN32
   setvbuf(stdout, NULL, _IOLBF, 0);