Platform: properly define enum operators for all EmscriptenApp flags.

src/Magnum/Platform/EmscriptenApplication.h

@@ -709,6 +709,8 @@ class EmscriptenApplication::GLConfiguration {
         Flags _flags;
 };
 
+CORRADE_ENUMSET_OPERATORS(EmscriptenApplication::GLConfiguration::Flags)
+
 /**
 @brief Configuration
 
@@ -810,6 +812,8 @@ class EmscriptenApplication::Configuration {
         WindowFlags _windowFlags;
 };
 
+CORRADE_ENUMSET_OPERATORS(EmscriptenApplication::Configuration::WindowFlags)
+
 /**
 @brief Viewport event
 
@@ -970,6 +974,8 @@ class EmscriptenApplication::InputEvent {
         bool _accepted;
 };
 
+CORRADE_ENUMSET_OPERATORS(EmscriptenApplication::InputEvent::Modifiers)
+
 /**
 @brief Mouse event
 
@@ -1057,6 +1063,8 @@ class EmscriptenApplication::MouseMoveEvent: public EmscriptenApplication::Input
         const EmscriptenMouseEvent* const _event;
 };
 
+CORRADE_ENUMSET_OPERATORS(EmscriptenApplication::MouseMoveEvent::Buttons)
+
 /**
 @brief Mouse scroll event
 
@@ -1289,8 +1297,6 @@ class EmscriptenApplication::KeyEvent: public EmscriptenApplication::InputEvent
         const EmscriptenKeyboardEvent* const _event;
 };
 
-CORRADE_ENUMSET_OPERATORS(EmscriptenApplication::MouseMoveEvent::Buttons)
-
 /**
 @brief Text input event