Fix a segmentation fault on the Alpha.

As shown with this script :

	m(){ if [ $1 -eq 1 ];then echo $2 $3;else m $(($1-1)) $2 $4 $3;m 1 $2 \
	$3 $4;m $(($1-1)) $4 $3 $2;fi;};if [ $# -eq 3 ]&&[ $3 -ge 1 -a $1 -le \
	3 -a $1 -ge 1 -a $2 -le 3 -a $2 -ge 1 -a $1 -ne $2 ];then m $3 $1 $2 $\
	((6-$1-$2)); else echo Usage: /bin/sh hanoi.sh from to num; fi #by rhb

$ bash2 hanoi.sh 1 2 3
1 2
1 3
Segmentation fault (core dumped)

Submitted by:	Christian Weisgerber <naddy@mips.inka.de>

1 files changed, 20 insertions, 0 deletions

diff --git a/shells/bash/files/patch-execute_cmd.c b/shells/bash/files/patch-execute_cmd.c
new file mode 100644
index 000000000000..e50bfb5bd1e0
--- /dev/null
+++ b/shells/bash/files/patch-execute_cmd.c
@@ -0,0 +1,20 @@
+--- execute_cmd.c.shellfunc	Tue Jan 25 11:29:11 2000
++++ execute_cmd.c	Tue May  2 21:26:24 2000
+@@ -2762,6 +2762,8 @@
+   if (tc && (flags & CMD_IGNORE_RETURN))
+     tc->flags |= CMD_IGNORE_RETURN;
+ 
++  old_shell_function = this_shell_function;
++
+   if (subshell == 0)
+     {
+       begin_unwind_frame ("function_calling");
+@@ -2843,6 +2845,8 @@
+ 
+   if (variable_context == 0 || this_shell_function == 0)
+     make_funcname_visible (0);
++
++  this_shell_function = old_shell_function;
+ 
+   return (result);
+ }