[PATCH] Fix nanosleep

[Thomas Pfaff]

While i am investigating some problems with threads and signals i have
found a bug in nanosleep where signal_arrived is unnecessary checked
twice. This will lead to problems if the event is reset between the two
checks. I can provide a testcase if someone is interested in details.
AFAICT this problem occurs only in multithreaded apps.

2002-05-06  Thomas Pfaff  <tpfaff@gmx.net>

	* signal.cc (nanosleep): Do not wait twice for signal arrival.

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