VM: fixed an error introduced in the last merging

src/nasal_vm.h

@@ -31,7 +31,7 @@ protected:
 
     /* nasal native functions */
     std::vector<nasal_builtin_table> native_function;
-    
+
     /* garbage collector */
     gc ngc;
 
@@ -320,15 +320,16 @@ public:
         flag_limited_mode = flag;
     }
 
+    auto get_gc_time_ms() const {
+        return ngc.get_gc_time_ms();
+    }
+
     void set_interrupt_ptr(std::atomic<bool>* p) {
         interrupt_ptr = p;
     }
 
 private:
     std::atomic<bool>* interrupt_ptr = nullptr;
-    auto get_gc_time_ms() const {
-        return ngc.get_gc_time_ms();
-    }
 };
 
 inline bool vm::boolify(const var& val) {
@@ -983,7 +984,7 @@ inline void vm::o_callfh() {
     for(u32 i = 0; i<func.local_size; ++i) {
         local[i] = func.local[i];
     }
-    
+
     bool lack_arguments_flag = false;
     for(const auto& i : func.keys) {
         const auto& key = i.first;