ImageViewBase: Move local variables to inner scope to avoid shadowing #351
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ローカル変数の名前がシャドウイングされているとcppcheckに指摘されたため
内側のスコープへ変数宣言を移動します。
cppcheckのレポート
```
src/image/imageviewbase.cpp:1200:43: style: Local variable 'tact' shadows outer variable [shadowVariable]
Glib::RefPtr< Gtk::ToggleAction > tact = Glib::RefPtr< Gtk::ToggleAction >::cast_dynamic( act );
^
src/image/imageviewbase.cpp:1192:39: note: Shadowed declaration
Glib::RefPtr< Gtk::ToggleAction > tact;
^
src/image/imageviewbase.cpp:1200:43: note: Shadow variable
Glib::RefPtr< Gtk::ToggleAction > tact = Glib::RefPtr< Gtk::ToggleAction >::cast_dynamic( act );
^
```
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ローカル変数の名前がシャドウイングされているとcppcheckに指摘されたため内側のスコープへ変数宣言を移動します。
cppcheckのレポート