dtgreet: Do not crash if LANG is not set in the environment.

In that case, catopen() will have never been called, and we'd feed 0 as the
first argument to catgets().  This crashes, at least on OpenBSD.

diff --git a/cde/programs/dtlogin/vgutil.c b/cde/programs/dtlogin/vgutil.c
index 1d7e73ed6cc37100ba8c6cd0839a0a09dc6bb3a3..f38c7778ca522111b6a517bd21fd78dd697b0f9d 100644 (file)
--- a/cde/programs/dtlogin/vgutil.c
+++ b/cde/programs/dtlogin/vgutil.c
@@ -791,7 +791,7 @@ unsigned char *
 ReadCatalog(int setn, int msgn, char *dflt)
 {
     OpenCatalog();
-    if (0 > (int) nl_fd)
+    if ((0 > (int) nl_fd) || (NULL == langenv))
       return (unsigned char*) dflt;
     else
       return (unsigned char*) catgets(nl_fd, setn, msgn, dflt);