Fix 32 bit compilation

The class wxTextFieldCell was still declared, but not defined for 32 bit builds, move the define to NSTextFieldCell into the header.

include/wx/osx/cocoa/dataview.h

@@ -372,10 +372,13 @@ private:
 // NSTextFieldCell customized to allow vertical alignment
 // ============================================================================
 
+#ifndef __LP64__
+    #define wxTextFieldCell NSTextFieldCell
+#else
 @interface wxTextFieldCell : NSTextFieldCell
     -(void) setWXAlignment:(int)alignment;
 @end
-
+#endif
 
 // ============================================================================
 // wxImageTextCell