Fix minor Pth initialization bug

CHANGES

@@ -4,6 +4,7 @@ Changes included in OpenLDAP 1.2.12 Engineering
 	CVS Tag: OPENLDAP_REL_ENG_1_2
 	Fixed ldapmodify ldaphost NULL bug
 	Fixed ldapsearch uninitialized fp bug
+	Fixed Pth initialization bug
 	Build Environment
 		Ignore make clean rm failure
 

libraries/liblthread/thr_pth.c

@@ -27,9 +27,14 @@ static pth_attr_t detach_attr;
 int
 ldap_pvt_thread_initialize( void )
 {
+	if( !pth_init() ) {
+		return -1;
+	}
+
 	detach_attr = pth_attr_new();
 	pth_attr_set( detach_attr, PTH_ATTR_JOINABLE, 0 );
-	return pth_init();
+
+	return 0;
 }
 
 int