shell mode segfault patch

Hi,

This patch solve a segfault that ocurre in certain cases when switch to a shell buffer.
I simple add a call to text_mode_init() in the shell_mode_init() function in shell.c 
I don't know if this is necesary for shell mode, but work for me. 
It is correct?

thanks
federico luna
(sorry my bad english)

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--- qemacs-0.3.1/shell.c	Mon Apr 21 19:01:43 2003
+++ qemacs-0.3.1_fedel/shell.c	Thu Nov 27 10:41:19 2003
@@ -67,6 +67,10 @@
 
 static int shell_mode_init(EditState *s, ModeSavedData *saved_data)
 {
+    int ret;
+    ret = text_mode_init(s, saved_data);
+    if (ret)
+        return ret;
     s->tab_size = 8;
     s->wrap = WRAP_TRUNCATE;
     s->interactive = 1;