mypy: Fix new issues in miscwidgets

qutebrowser/misc/miscwidgets.py

@@ -19,6 +19,8 @@
 
 """Misc. widgets used at different places."""
 
+import typing
+
 from PyQt5.QtCore import pyqtSlot, pyqtSignal, Qt, QSize, QTimer
 from PyQt5.QtWidgets import (QLineEdit, QWidget, QHBoxLayout, QLabel,
                              QStyleOption, QStyle, QLayout, QApplication)
@@ -34,14 +36,16 @@ class MinimalLineEditMixin:
     """A mixin to give a QLineEdit a minimal look and nicer repr()."""
 
     def __init__(self):
-        self.setStyleSheet("""
+        self.setStyleSheet(  # type: ignore
+            """
             QLineEdit {
                 border: 0px;
                 padding-left: 1px;
                 background-color: transparent;
             }
-        """)
-        self.setAttribute(Qt.WA_MacShowFocusRect, False)
+            """
+        )
+        self.setAttribute(Qt.WA_MacShowFocusRect, False)  # type: ignore
 
     def keyPressEvent(self, e):
         """Override keyPressEvent to paste primary selection on Shift + Ins."""
@@ -52,7 +56,7 @@ class MinimalLineEditMixin:
                 e.ignore()
             else:
                 e.accept()
-                self.insert(text)
+                self.insert(text)  # type: ignore
             return
         super().keyPressEvent(e)  # type: ignore
 
@@ -231,7 +235,7 @@ class WrapperLayout(QLayout):
 
     def __init__(self, parent=None):
         super().__init__(parent)
-        self._widget = None
+        self._widget = typing.cast(QWidget, None)
 
     def addItem(self, _widget):
         raise utils.Unreachable
@@ -255,7 +259,7 @@ class WrapperLayout(QLayout):
         widget.setParent(container)
 
     def unwrap(self):
-        self._widget.setParent(None)
+        self._widget.setParent(None)  # type: ignore
         self._widget.deleteLater()