fix: Timeout comparison operator (#1155)

src/power.sh

@@ -50,7 +50,7 @@ finish() {
       # Workaround for zombie pid
       [ ! -s "$QEMU_PID" ] && break
 
-      if [ "$cnt" == "5" ]; then
+      if [ "$cnt" -eq 5 ]; then
         echo && error "QEMU did not terminate itself, forcefully killing process..."
         { kill -9 "$pid" || true; } 2>/dev/null
       fi