move __abort_lock to its own file and drop pointless weak_alias trick

the dummy definition of __abort_lock in sigaction.c was performing
exactly the same role that putting the lock in its own source file
could and should have been used to achieve.

while we're moving it, give it a proper declaration.

1 files changed, 0 insertions, 6 deletions

diff --git a/src/signal/sigaction.c b/src/signal/sigaction.c
index c109bea0..a4737404 100644
--- a/src/signal/sigaction.c
+++ b/src/signal/sigaction.c
@@ -7,12 +7,6 @@
 #include "lock.h"
 #include "ksigaction.h"
 
-static volatile int dummy_lock[1] = { 0 };
-
-extern hidden volatile int __abort_lock[1];
-
-weak_alias(dummy_lock, __abort_lock);
-
 static int unmask_done;
 static unsigned long handler_set[_NSIG/(8*sizeof(long))];