code quality: made unused switch cases more obvious

src/QR.cpp

@@ -31,7 +31,7 @@ void QR::render(Format format) {
 		case Format::SVG     : this->renderTyped<SVGRenderer>(); break;
 		case Format::JPG     : this->renderTyped<JPGRenderer>(); break;
 		case Format::BMP     : this->renderTyped<BMPRenderer>(); break;
-		case Format::END     : break;
+		UNUSED_CASE(Format::END);
 	}
 }
 

src/QR.hpp

@@ -6,6 +6,8 @@
 #include "qrcodegen.hpp"
 #include "Renderer.hpp"
 
+#define UNUSED_CASE(name) case name: break; 
+
 namespace massivedynamic {
 	typedef uint32_t Color;