Ensure that the time-out for sleeping is never negative.

git-svn-id: svn+ssh://svn.code.sf.net/p/freeglut/code/trunk/freeglut/freeglut@375 7f0cb862-5218-0410-a997-914c9d46530a

diff --git a/src/freeglut_main.c b/src/freeglut_main.c
index bbcb1ab..4936528 100644 (file)
--- a/src/freeglut_main.c
+++ b/src/freeglut_main.c
@@ -423,10 +423,12 @@ static int fgHavePendingRedisplays (void)
 static long fgNextTimer( void )
 {
     long ret = INT_MAX;
-    SFG_Timer *timer;
+    SFG_Timer *timer = fgState.Timers.First;
 
-    if( (timer = fgState.Timers.First) )
+    if( timer )
         ret = timer->TriggerTime - fgElapsedTime();
+    if( ret < 0 )
+        ret = 0;
 
     return ret;
 }
@@ -452,7 +454,7 @@ static void fgSleepForEvents( void )
     msec = fgNextTimer( );
     if( fgHaveJoystick( ) )
         msec = MIN( msec, 10 );
-    
+
     wait.tv_sec = msec / 1000;
     wait.tv_usec = (msec % 1000) * 1000;
     err = select( socket+1, &fdset, NULL, NULL, &wait );