Eliminate unused variable.
diff --git a/tests/bug777.c b/tests/bug777.c
index be9e188..506ec73 100644
--- a/tests/bug777.c
+++ b/tests/bug777.c
@@ -30,7 +30,6 @@
     int sb;
     int sc1;
     int sc2;
-    char socket_address[128];
 
     sb = test_socket (AF_SP, NN_PAIR);
     test_bind (sb, "inproc://pair");