typo in signal.texi

[Karl Berry]

Here is a typo in libc/manual/signal.texi.  It was reported by the same
person who asked about the POSIX threads documentation, Geoffrey Robson
<gr@cambridgeconsultants.com>.  Any info on that would be gratefully
received ...

Thanks,
Karl

--- signal.texi.~1.73.~	2007-07-20 10:03:19.000000000 +0200
+++ signal.texi	2007-09-05 20:30:26.000000000 +0200
@@ -2318,5 +2318,5 @@
 the processes in the process group named by @var{pid}.
 
-@item ESCRH
+@item ESRCH
 The @var{pid} argument does not refer to an existing process or group.
 @end table