ReadBig() should be defined in ANSI build too

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@53905 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

tests/textfile/textfiletest.cpp

@@ -202,6 +202,8 @@ void TextFileTestCase::ReadUTF16()
 #endif // wxHAVE_U_ESCAPE
 }
 
+#endif // wxUSE_UNICODE
+
 void TextFileTestCase::ReadBig()
 {
     static const size_t NUM_LINES = 10000;
@@ -225,7 +227,5 @@ void TextFileTestCase::ReadBig()
                           f[NUM_LINES - 1] );
 }
 
-#endif // wxUSE_UNICODE
-
 #endif // wxUSE_TEXTFILE