HPCC-29790 Ensure that time spend sleeping is recorded in the workunit

Signed-off-by: Gavin Halliday <[email protected]>

ecllibrary/std/system/Debug.ecl

@@ -6,7 +6,7 @@
 
 rtl := SERVICE
  unsigned4 msTick() :       eclrtl,library='eclrtl',entrypoint='rtlTick';
- unsigned4 sleep(unsigned4 _delay) : eclrtl,action,library='eclrtl',entrypoint='rtlSleep';
+ unsigned4 sleep(unsigned4 _delay) : eclrtl,action,library='eclrtl',entrypoint='rtlSleep',time;
  printStackReport(integer startIP) : cpp,action,library='jlib';
 END;