fixed some heavy pointermistakes

countdown.cpp

@@ -2,9 +2,14 @@
 #include "unistd.h"
 Countdown::Countdown()
 {
+    this->running = 1;
 }
+void Countdown::setStop(){
+    this->running = 0;
+}
+
 void Countdown::run(){
-    while(1){
+    while(this->running){
         sleep(1);
         emit CountdownUpdate();
     }