BUG/MINOR: cli: "show cli sockets" wouldn't list all processes

A small bug in "show cli sockets" made it limit the output to the first 8
processes only.
diff --git a/src/cli.c b/src/cli.c
index c37feb7..6fd7455 100644
--- a/src/cli.c
+++ b/src/cli.c
@@ -799,7 +799,7 @@
 						if (bind_conf->bind_proc != 0) {
 							int pos;
 
-							for (pos = 0; pos < sizeof(bind_conf->bind_proc); pos++) {
+							for (pos = 0; pos < 8 * sizeof(bind_conf->bind_proc); pos++) {
 								if (bind_conf->bind_proc & (1 << pos)) {
 									chunk_appendf(&trash, "%d,", pos+1);
 								}