Fix problem with `exit -1' giving `ksh: exit: -1: unknown option' (see bug#502934)

Index: pdksh-5.2.14/c_sh.c
===================================================================
--- pdksh-5.2.14.orig/c_sh.c	2009-09-19 11:38:39.000000000 +0200
+++ pdksh-5.2.14/c_sh.c	2009-09-19 11:39:33.000000000 +0200
@@ -534,9 +534,14 @@
 	int n;
 	char *arg;
 
-	if (ksh_getopt(wp, &builtin_opt, null) == '?')
-		return 1;
-	arg = wp[builtin_opt.optind];
+	if (!Flag(FPOSIX) 			// not posix
+	    && *wp && *(wp + 1) && !*(wp + 2))  // only one argument passed
+		arg=*(wp + 1);		        // code regardless of starting with '-' or not
+	else {
+		if (ksh_getopt(wp, &builtin_opt, null) == '?')
+			return 1;
+		arg = wp[builtin_opt.optind];
+	}
 
 	if (arg) {
 	    if (!getn(arg, &n)) {
Index: pdksh-5.2.14/tests/debian-110.t
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ pdksh-5.2.14/tests/debian-110.t	2009-09-19 11:41:59.000000000 +0200
@@ -0,0 +1,17 @@
+name: debian-110-1
+description:
+	Check if exit -1 is allowed for ! posix
+stdin:
+	(set +o posix; exit -1); echo A $?
+expected-stdout:
+	A 255
+---
+name: debian-110-2
+description:
+	Check if exit -1 is not allowed for posix
+stdin:
+	(set -o posix; exit -1); echo A $?
+expected-stdout:
+	A 1
+expected-fail: yes
+---