[PATCH] Fix high CPU usage when the output module unexpectedly

[chrys87]

Hi List,
This patch works as descriped.

>>Speech-dispatcher can consume most of cpu resources if the output module 
>>stops.
>>
>>For example, this issue can be observed on fedora 19 with speech dispatcher 
>>0.8, when the user logins from a gdm with screen reader on.
>>Then, the output modules used by gdm are stopped which is followed by a high 
>>cpu usage.
>>
>>---
>> src/server/speaking.c |    5 ++++-
>> 1 file changed, 4 insertions(+), 1 deletion(-)
>>
>>diff --git a/src/server/speaking.c b/src/server/speaking.c
>>index ee8c4d4..e9f745c 100644
>>--- a/src/server/speaking.c
>>+++ b/src/server/speaking.c
>>@@ -98,7 +98,10 @@ void *speak(void *data)
>>              }
>>              if (poll_count > 1) {
>>                      if ((revents = poll_fds[1].revents)) {
>>-                             if ((revents & POLLIN) || (revents & POLLPRI)) {
>>+                             if (revents & POLLHUP) {
>>+                                     FATAL
>>+                                             ("wait_for_poll: output_module 
>>disconnected");
>>+                             } else if ((revents & POLLIN) || (revents & 
>>POLLPRI)) {
>>                                      MSG(5,
>>                                          "wait_for_poll: activity on 
>> output_module");
>>                                      /* Check if sb is speaking or they are 
>> all silent.
>>--