Switch config struct to use pid_t for pid

Technically a pid is a signed int, so the previous code was fine. But
using pid_t follows better practice.

1 files changed, 1 insertions, 1 deletions

diff --git a/main.c b/main.c
index 487809e..c4b1661 100644
--- a/main.c
+++ b/main.c
@@ -23,7 +23,7 @@
 #include <sys/stat.h>
 
 struct config {
-  int pid;
+  pid_t pid;
   char dead;
   char live;
   char sockets;