minor lib fix

Makefile

@@ -1,7 +1,7 @@
 BUILDDIR = ./build
 projs = grs info blog apps os
 copyfiles =  index.ls mimes.json
-main: clean copy
+main:  clean copy
 	for f in $(projs); do  make -C  "$${f}" ; done
 
 copy:

os/controllers/SystemController.lua

@@ -146,8 +146,8 @@ function SystemController:apigateway(...)
         if (pid == -1) then
             echo("{'error':'Cannot create process'}")
         elseif pid > 0 then -- parent
-            -- wait for the child exit
-            ulib.waitpid(pid)
+            -- wait for the child exit or websocket exit
+            ulib.waitpid(pid, 0)
             print("Parent exit")
         else -- child
             if use_ws then