adjusted assert to be valid for all configs

src/libzafl.c

@@ -93,7 +93,8 @@ static void zafl_setupSharedMemory()
 		else
 		{
 			PRINT_DEBUG("Success at mmap!");
-			assert(zafl_trace_map==shmat_addr);
+			if(shmat_addr!=0)
+				assert(zafl_trace_map==shmat_addr);
 		}
 
 		shared_memory_is_setup = 1;