Fixup the event loop so network activity still runs when there is no UI events.

www-client/netsurf/patches/netsurf-2.HEAD.patch

@@ -100,7 +100,7 @@ index 79dea4e..563f431 100644
  		return false;
  	}
 diff --git a/beos/gui.cpp b/beos/gui.cpp
-index b275616..d951c6c 100644
+index b275616..c8ff5c2 100644
 --- a/beos/gui.cpp
 +++ b/beos/gui.cpp
 @@ -450,7 +450,6 @@ static void gui_init2(int argc, char** argv)
@@ -186,7 +186,47 @@ index b275616..d951c6c 100644
  #endif
  #endif
  
-@@ -751,31 +749,6 @@ void gui_quit(void)
+@@ -689,14 +687,16 @@ void gui_poll(bool active)
+ 	unsigned int fd_count = 0;
+ 	bool block = true;
+ 
++	schedule_run();
++
+ 	if (browser_reformat_pending)
+ 		block = false;
+ 
+-	FD_ZERO(&read_fd_set);
+-	FD_ZERO(&write_fd_set);
+-	FD_ZERO(&exc_fd_set);
+-
+ 	if (active) {
++		block = false; // there is network activity going on
++		FD_ZERO(&read_fd_set);
++		FD_ZERO(&write_fd_set);
++		FD_ZERO(&exc_fd_set);
+ 		code = curl_multi_fdset(fetch_curl_multi,
+ 				&read_fd_set,
+ 				&write_fd_set,
+@@ -709,7 +709,8 @@ void gui_poll(bool active)
+ 	FD_SET(sEventPipe[0], &read_fd_set);
+ 	max_fd = MAX(max_fd, sEventPipe[0] + 1);
+ 
+-
++	// earliest_callback_timeout is set by the scheduler and tells us when the
++	// next UI event should happen.
+ 	bigtime_t next_schedule = earliest_callback_timeout - system_time();
+ 	if (!block)
+ 		next_schedule = 0LL; // now
+@@ -730,8 +731,6 @@ void gui_poll(bool active)
+ 			nsbeos_dispatch_event(message);
+ 	}
+ 
+-	schedule_run();
+-
+ 	if (browser_reformat_pending)
+ 		nsbeos_window_process_reformats();
+ }
+@@ -751,31 +750,6 @@ void gui_quit(void)
  }
  
  
@@ -679,6 +719,24 @@ index ae78391..bd13230 100644
  };
  
  
+diff --git a/beos/schedule.cpp b/beos/schedule.cpp
+index 3f82235..2499159 100644
+--- a/beos/schedule.cpp
++++ b/beos/schedule.cpp
+@@ -104,11 +104,12 @@ bool
+ schedule_run(void)
+ {
+ 	LOG(("schedule_run()"));
++
++	earliest_callback_timeout = B_INFINITE_TIMEOUT;
+ 	if (callbacks == NULL)
+ 		return false; /* Nothing to do */
+ 
+ 	bigtime_t now = system_time();
+-	earliest_callback_timeout = B_INFINITE_TIMEOUT;
+ 	int32 i;
+ 
+ 	LOG(("Checking %ld callbacks to for deadline.", this_run->CountItems()));
 diff --git a/beos/window.cpp b/beos/window.cpp
 index 253b5d1..729d7b1 100644
 --- a/beos/window.cpp