GlutWindowContext: don't save unused argc and argv variables.

src/Contexts/GlutWindowContext.cpp

@@ -22,7 +22,7 @@ namespace Magnum { namespace Contexts {
 
 GlutWindowContext* GlutWindowContext::instance = nullptr;
 
-GlutWindowContext::GlutWindowContext(int& argc, char** argv, const std::string& title, const Math::Vector2<GLsizei>& size): argc(argc), argv(argv) {
+GlutWindowContext::GlutWindowContext(int& argc, char** argv, const std::string& title, const Math::Vector2<GLsizei>& size) {
     /* Save global instance */
     instance = this;
 

src/Contexts/GlutWindowContext.h

@@ -250,9 +250,6 @@ class GlutWindowContext: public AbstractWindowContext {
 
         static GlutWindowContext* instance;
 
-        int& argc;
-        char** argv;
-
         Context* c;
 };