Fix readline use so that control-c clears input bufferbaserock/liw/S8700-bc-segfault

Patch from Debian's bc package (see Debian bug #287210). Basically,
without the patch, bc won't clear the input buffer when the user
types control-C, and so this happens:

    1
    (interrupt) use quit to exit.
    2+3
    15

The expected result is 6, not 15.

1 files changed, 3 insertions, 0 deletions

diff --git a/bc/main.c b/bc/main.c
index 9a2461e..3ae427d 100644
--- a/bc/main.c
+++ b/bc/main.c
@@ -358,6 +358,9 @@ use_quit (sig)
   errno = save;
 #else
   write (1, "\n(interrupt) Exiting bc.\n", 26);
+#ifdef READLINE
+  rl_initialize (); /* Clear readline buffer */
+#endif
 #if defined(LIBEDIT)
   if (edit != NULL)
     el_end(edit);