修复expand函数中无法malloc的bug：

原因是free的时候没有消除指针悬挂

main.c

@@ -6,8 +6,9 @@
 #include "cnn.h"
 
 
+
 void run_dataset(){
-    char* modelusearr[] = {
+    char* modelusearr_origin[] = {
             "C1autosave00095_right_new_2",
             "C1autosave00096_right_new_2",
             "C1autosave00097_right_new_2",
@@ -69,6 +70,23 @@ void run_dataset(){
             "filtered_C1autosave00039_right_new",
             "filtered_C1autosave00062_right_new",
     };
+    char* modelusearr_out[] = {
+            "split_1",
+            "split_2",
+            "split_3",
+            "split_4",
+            "split_5",
+            "split_6",
+            "split_7",
+            "split_8",
+            "split_9",
+            "split_10",
+    };
+/* 可用数据集如下
+ * modelusearr_origin
+ * modelusearr_out
+*/
+    #define modelusearr modelusearr_origin
     for(int a=0;a<(sizeof(modelusearr) / sizeof(modelusearr[0]));a++){
         SDRAM_USED();
         model_switchdata(modelusearr[a]);
@@ -83,8 +101,6 @@ int main(){
     model_write("all");
 
     run_dataset();
-//    model_switchdata("C1autosave00095_right_new_2");
-//    cnn_run();
 
     DEBUG_PRINTF("\r\nEnd结束");
-}
+}