improve layout

src/node_panel_grid.h

@@ -46,7 +46,7 @@ public:
     NodeImageTexture* m_hm_preview;
     NodeButton* m_hm_load;
     NodeButton* m_hm_clear;
-    NodeButtonCustom* m_hm_reload;
+    NodeButton* m_hm_reload;
     NodeComboBox* m_hm_shading;
     NodeSliderH* m_hm_height;
     NodeSliderH* m_hm_wireframe;
@@ -68,7 +68,7 @@ public:
     Sampler m_sampler_linear;
     std::string m_file_path;
     nanort::BVHAccel<float> m_rt_accel;
-    bool m_rt_dirty = true;;
+    bool m_rt_dirty = true;
     ShadeMode m_shade_mode{ ShadeMode::Transparent };
     GLfloat m_line_range[2];
     GLfloat m_line_granularity;