Pass -Wshadow (#97)

Requested from:
https://github.com/robinlinden/hastur/pull/12

src/ftxui/component/radiobox.cpp

@@ -49,8 +49,8 @@ RadioboxBase* RadioboxBase::From(Component component) {
 }
 
 RadioboxBase::RadioboxBase(const std::vector<std::wstring>* entries,
-                           int* selected_)
-    : entries_(entries), selected_(selected_) {}
+                           int* selected)
+    : entries_(entries), selected_(selected) {}
 
 Element RadioboxBase::Render() {
   std::vector<Element> elements;

src/ftxui/component/terminal_input_parser.hpp

@@ -44,7 +44,7 @@ class TerminalInputParser {
       CursorReporting cursor;
     };
 
-    Output(Type type) : type(type) {}
+    Output(Type t) : type(t) {}
   };
 
   void Send(Output type);