fix(flash-gui): done 事件后清空 proc 句柄, 修复一次操作后永久忙碌

FlashTool/src/app_gui.py

@@ -33,7 +33,7 @@ BOLD = ('Microsoft YaHei UI', 13, 'bold')
 TITLE_FONT = ('Microsoft YaHei UI', 18, 'bold')
 
 APP_NAME = 'DAPLink Flash'
-APP_VERSION = '2.0.0'
+APP_VERSION = '2.0.1'
 REPO_URL = 'https://gitea.hulk.wang/hulk/gd32e230f8_firmware_merge_tool'
 
 OK_BLUE = '#3B8ED0'
@@ -515,6 +515,7 @@ class App(ctk.CTk):
                     else:
                         self._log('[失败] %s (退出码 %d)' % (title, code))
                         self._set_status('%s 失败' % title)
+                    self.proc = None            # 释放占用, 允许下一次操作
                     self._busy(False)
                     self._save()
         except queue.Empty: