[Arch] Silence LGTM missing init warnings

src/Mod/Arch/OfflineRenderingUtils.py

@@ -122,7 +122,8 @@ class FreeCADGuiHandler(xml.sax.ContentHandler):
     # plus a GuiCameraSettings key that contains an iv repr of a coin camera
 
     def __init__(self):
-
+        
+        super().__init__()
         self.guidata = {}
         self.current = None
         self.properties = {}

src/Mod/Arch/importSH3D.py

@@ -105,7 +105,8 @@ def read(filename):
 class SH3DHandler(xml.sax.ContentHandler):
 
     def __init__(self,z):
-
+        
+        super().__init__()
         self.makeIndividualWalls = False
         self.z = z
         self.windows = []