lib: Change invalid pid to -1

The stack used pid 0 (the scheduler) to indicate an invalid process
instance, probably as a leftover from the deprecated application
process instance id. Using -1 is a better solution.

Fixes #16.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/lib/ipcp.c b/src/lib/ipcp.c
index b336155e..e4a82b60 100644
--- a/src/lib/ipcp.c
+++ b/src/lib/ipcp.c
@@ -103,7 +103,7 @@ static ipcp_msg_t * send_recv_ipcp_msg(pid_t api,
 
 pid_t ipcp_create(enum ipcp_type ipcp_type)
 {
-        pid_t api = 0;
+        pid_t api = -1;
         char irmd_api[10];
         size_t len = 0;
         char * ipcp_dir = "/sbin/";