Stop RotateScreen from crashing when it has no subscreens.

diff --git a/bigscreen/rotatescreen.cpp b/bigscreen/rotatescreen.cpp
index 96a3ebc7bad1137f957e1971642f611ddd34247e..2ae782218516d9024abd8f8ff3a867da4c100310 100644 (file)
--- a/bigscreen/rotatescreen.cpp
+++ b/bigscreen/rotatescreen.cpp
@@ -32,6 +32,12 @@ bool RotateScreen::check_invalidated()
 void RotateScreen::draw(unsigned char *buf)
 {
        bool force = false;
 void RotateScreen::draw(unsigned char *buf)
 {
        bool force = false;

+
+       if (subscreens.size() == 0) {
+               valid = true;
+               gettimeofday(&last_update, NULL);
+               return;
+       }

        
        // if we're in a fade, complete it before doing anything else
        if (in_fade) {
        
        // if we're in a fade, complete it before doing anything else
        if (in_fade) {