progs/demos: fix glut initialization calls

Remove glutInitWindowPosition() calls to play nicer with window managers.

Move glutInitWindowSize() calls before glutInit() so the the default window
size can be overridden by the -geometry cmd line option.
diff --git a/progs/demos/fogcoord.c b/progs/demos/fogcoord.c
index 7d5c11a..336aa58 100644
--- a/progs/demos/fogcoord.c
+++ b/progs/demos/fogcoord.c
@@ -404,8 +404,8 @@
 int
 main( int argc, char *argv[] )
 {
-   glutInit( &argc, argv );
    glutInitWindowSize( 600, 600 );
+   glutInit( &argc, argv );
    glutInitDisplayMode( GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH );
    glutCreateWindow(argv[0]);
    glewInit();