fix install thread

igniter/install_dialog.py

@@ -407,7 +407,8 @@ class InstallDialog(QtWidgets.QDialog):
 
         install_thread.start()
 
-    def _installation_finished(self, status):
+    def _installation_finished(self):
+        status = self._install_thread.result()
         if status >= 0:
             self._update_progress(100)
             QtWidgets.QApplication.processEvents()

igniter/install_thread.py

@@ -30,7 +30,6 @@ class InstallThread(QThread):
     """
     progress = Signal(int)
     message = Signal((str, bool))
-    finished = Signal(int)
 
     def __init__(self, parent=None,):
         self._mongo = None
@@ -47,7 +46,6 @@ class InstallThread(QThread):
         if self._result is not None:
             raise AssertionError("BUG: Result was set more than once!")
         self._result = value
-        self.finished.emit(value)
 
     def run(self):
         """Thread entry point.
@@ -162,6 +160,7 @@ class InstallThread(QThread):
 
             self.message.emit(f"Installed as {local_openpype}", False)
             self.progress.emit(100)
+            self._set_result(1)
             return
         else:
             # if we have mongo connection string, validate it, set it to