Reduce the scope of variables using to indexing single loop only.

And adjust their types if necessary (to have uniform types in the test expression).

src/propgrid/advprops.cpp

@@ -94,8 +94,7 @@ bool operator == (const wxArrayInt& array1, const wxArrayInt& array2)
 {
     if ( array1.size() != array2.size() )
         return false;
-    size_t i;
-    for ( i=0; i<array1.size(); i++ )
+    for ( size_t i = 0; i < array1.size(); i++ )
     {
         if ( array1[i] != array2[i] )
             return false;
@@ -2134,8 +2133,7 @@ bool wxMultiChoiceProperty::OnEvent( wxPropertyGrid* propgrid,
                     value.push_back(extraStrings[n]);
             }
 
-            unsigned int i;
-            for ( i=0; i<arrInt.size(); i++ )
+            for ( size_t i = 0; i < arrInt.size(); i++ )
                 value.Add(m_choices.GetLabel(arrInt.Item(i)));
 
             if ( userStringMode == 2 )