Fix clang-tidy errors

src/keyboard_input/input_parser.cpp

@@ -202,7 +202,7 @@ std::vector<Token>
             }
         }
 
-        std::string characters = "";
+        std::string characters;
         characters.push_back( *ch );
         while ( ch + 1 != end )
         {

src/keyboard_input/input_sender_X11.cpp

@@ -97,11 +97,7 @@ void sendKeyPress( const Token token,
 {
     bool keyDown = false;
 
-    if ( status == KeyStatus::Up )
-    {
-        keyDown = false;
-    }
-    else
+    if ( status == KeyStatus::Down )
     {
         keyDown = true;
     }