Correct vfork()/exit() to vfork()/_exit().

Also return "1" rather than "-1".  According to bde: -1 is unrepresentable.
Exit statuses must be >= 0 and <= 255, at least if chars are 8 bits and
shorts are 16 bits.  This seems to only be documented indirectly in exit.2
by referring to wait.2.  WEXITSTATUS() throws away all except the low 8 bits
of the status returned by _exit(), and the kernel actually only stores 8
bits of it (if chars are 8 bits, etc.), so wait() can't return any more bits.

Obtained from: rev 1.4 of contrib/gcc/gcc.c

1 files changed, 1 insertions, 1 deletions

diff --git a/contrib/gcc/pexecute.c b/contrib/gcc/pexecute.c
index 804f314..a210b62 100644
--- a/contrib/gcc/pexecute.c
+++ b/contrib/gcc/pexecute.c
@@ -739,7 +739,7 @@ pexecute (program, argv, this_pname, temp_base, errmsg_fmt, errmsg_arg, flags)
 #else
       fprintf (stderr, ": %s\n", xstrerror (errno));
 #endif
-      exit (-1);
+      _exit (1);
       /* NOTREACHED */
       return 0;