Revert debce0fb80, use a sleep() to work around the X11 bug

Problem with debce0fb80 is the crashed process won't be killed until the user accepts the message box, and it's harder to get to the message box when the window is in full screen or the cursor is locked.

apps/openmw/crashcatcher.cpp

@@ -382,7 +382,15 @@ static void crash_handler(const char *logfile)
     fflush(stdout);
 
     if(crash_info.pid > 0)
+    {
         gdb_info(crash_info.pid);
+        kill(crash_info.pid, SIGKILL);
+    }
+
+    // delay between killing of the crashed process and showing the message box to
+    // work around occasional X server lock-up. this can only be a bug in X11 since
+    // even faulty applications shouldn't be able to freeze the X server.
+    usleep(100000);
 
     if(logfile)
     {
@@ -390,9 +398,6 @@ static void crash_handler(const char *logfile)
         SDL_ShowSimpleMessageBox(0, "Fatal Error", message.c_str(), NULL);
     }
 
-    if (crash_info.pid > 0)
-        kill(crash_info.pid, SIGKILL);
-
     exit(0);
 }