daemon-mode: add sleep() loop to prevent defunct child process, call setsid() in child

init.cpp

@@ -236,6 +236,10 @@ bool AppInit2(int argc, char* argv[])
         }
         if (pid > 0)
             return true;
+
+        pid_t sid = setsid();
+        if (sid < 0)
+            fprintf(stderr, "Error: setsid() returned %d errno %d\n", sid, errno);
     }
 #endif
 
@@ -467,5 +471,9 @@ bool AppInit2(int argc, char* argv[])
         SetStartOnSystemStartup(true);
 #endif
     
+    if (fDaemon)
+        while (!fShutdown)
+            Sleep(5000);
+
     return true;
 }