fix crashes in x32 __tls_get_addr
x32 has another gratuitous difference to all other archs:
it passes an array of 64bit values to __tls_get_addr().
usually it is an array of size_t.
diff --git a/src/internal/pthread_impl.h b/src/internal/pthread_impl.h
index 757b86a..ae0ab1c 100644
--- a/src/internal/pthread_impl.h
+++ b/src/internal/pthread_impl.h
@@ -97,6 +97,10 @@
#define DTP_OFFSET 0
#endif
+#ifndef tls_mod_off_t
+#define tls_mod_off_t size_t
+#endif
+
#define SIGTIMER 32
#define SIGCANCEL 33
#define SIGSYNCCALL 34