Update copyright and typo fix

src/gl/renderer/gl_renderbuffers.cpp

@@ -3,7 +3,7 @@
 ** Render buffers used during rendering
 **
 **---------------------------------------------------------------------------
-** Copyright 2008 Christoph Oelckers
+** Copyright 2016 Magnus Norddahl
 ** All rights reserved.
 **
 ** Redistribution and use in source and binary forms, with or without

src/gl/shaders/gl_presentshader.cpp

@@ -3,7 +3,7 @@
 ** Copy rendered texture to back buffer, possibly with gamma correction
 **
 **---------------------------------------------------------------------------
-** Copyright 2008 Christoph Oelckers
+** Copyright 2016 Magnus Norddahl
 ** All rights reserved.
 **
 ** Redistribution and use in source and binary forms, with or without

src/gl/shaders/gl_shaderprogram.cpp

@@ -3,7 +3,7 @@
 ** GLSL shader program compile and link
 **
 **---------------------------------------------------------------------------
-** Copyright 2008 Christoph Oelckers
+** Copyright 2016 Magnus Norddahl
 ** All rights reserved.
 **
 ** Redistribution and use in source and binary forms, with or without

src/posix/sdl/sdlglvideo.cpp

@@ -466,5 +466,5 @@ int SDLGLFB::GetClientHeight()
 {
 	int height = 0;
 	SDL_GL_GetDrawableSize(Screen, nullptr, &height);
-	return width;
+	return height;
 }