解决cvg申请内存导致不足的的问题

common/os_shim/freertos/src/os_malloc.c

@@ -51,9 +51,12 @@ void *os_mem_malloc(module_id_t module_id, size_t size)
 #endif
 {
     (void)module_id;  // avoid warning. to be fixed.
-    void *buf = pvPortMalloc(size);
 #if IOT_OS_MALLOC_DEBUG
-    iot_printf("%s:%d malloc.\n", file, line);
+    iot_printf("os_mem_malloc: size=%d\n", size);
+#endif
+    void* buf = pvPortMalloc(size);
+#if IOT_OS_MALLOC_DEBUG
+    iot_printf("%s:%d malloc. p=%p\n", file, line, buf);
 #endif
     if (buf) {
         os_mem_set(buf, 0, size);