PATCH: clear blocked signals on exec

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Fixes bug where exec'ed processes inherit their parents blocked signals.

--- linux-2.2.16/fs/exec.c.orig Sun Jul 2 20:38:14 2000
+++ linux-2.2.16/fs/exec.c Sun Jul 2 20:24:48 2000
@@ -538,6 +538,7 @@
         current->self_exec_id++;
 
         flush_signal_handlers(current);
+ sigemptyset(&current->blocked);
         flush_old_files(current->files);
 
         return 0;

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