Pcbnew python plugins: fix some pad arrays

Fixes some pad array init functions that were not calling the
class hierarchy's init functions correctly.

pcbnew/python/plugins/microMatch_connectors.py

@@ -42,10 +42,8 @@ class PadStaggeredZGridArray(PA.PadArray):
         @param aCentre      Center position
 
         """
-        PA.PadArray.__init__(self)
-        # this pad is more of a "context", we will use it as a source of
-        # pad data, but not actually add it
-        self.pad = aPad
+        super(PadStaggeredZGridArray, self).__init__(aPad)
+
         self.padCount = int(aPadCount)
         self.lineCount = int(aLineCount)
         self.linePitch = aLinePitch

pcbnew/python/plugins/sdip_wizard.py

@@ -23,6 +23,9 @@ import PadArray as PA
 
 class RowedGridArray(PA.PadGridArray):
 
+    def __init__(self, *args, **kwargs):
+        super(RowedGridArray, self).__init__(*args, **kwargs)
+
     def NamingFunction(self, x, y):
         pad_cnt = self.nx*self.ny