修复了PrintState函数中字符串数组未加终止符的问题

src/bus_io.c

@@ -162,6 +162,9 @@ void PrintState(char *str)
         clockwise[count] = '0';
         counterclockwise[count] = '0';
     }   //遍历轨道链表，将所有站点初始化为0，即：无任何请求；
+    target[count] = '\0';
+    clockwise[count] = '\0';
+    counterclockwise[count] = '\0';
     
     bus_query_t *t = NULL;
     int i;