[xilinx] correct assert statement (#4)

diff --git a/hardware/xilinx/src/vta.cc b/hardware/xilinx/src/vta.cc
index d9fe6f1..11ababf 100644
--- a/hardware/xilinx/src/vta.cc
+++ b/hardware/xilinx/src/vta.cc
@@ -738,5 +738,5 @@
     g2s_count++;
   }
 
-  assert(l2g_count == 0 && g2s_count == 0 && g2l_count == 0 && g2s_count == 0);
+  assert(l2g_count == 0 && s2g_count == 0 && g2l_count == 0 && g2s_count == 0);
 }