Let's not try to wait for -5 seconds, it breaks reality (and `sleep`).

Change-Id: I6a609c0139893e21f976b007ede8369192e80c98
Reviewed-on: http://gerrit.dmdirc.com/464
Reviewed-by: Shane Mc Cormack <shane@dmdirc.com>
Tested-by: Shane Mc Cormack <shane@dmdirc.com>

build-tests.xml

@@ -80,7 +80,7 @@
             <arg value="-s"/>
             <arg value="-screen 0 1280x1024x24"/>
             <arg value="-w"/>
-            <arg value="-5"/>
+            <arg value="5"/>
             <arg value="/usr/bin/ant"/>
             <arg value="do-real-test"/>
         </exec>