Fix trailing whitespace

FL/Fl_Gl_Window.H

@@ -47,7 +47,7 @@ class Fl_Gl_Window_Driver;
   to add a selection of widgets to an OpenGL window. The widgets will draw on top
   of any OpenGL rendering. The number of supported widgets will increase as the
   driver development improves. Program test/cube.cxx illustrates how to do that.
- 
+
   \note FLTK expects that when an Fl_Gl_Window is a child of a parent Fl_Window,
   the child window lies entirely inside its parent window. If that's not the case, what
   happens to the part of the GL subwindow which leaks outside its parent is undefined

FL/Fl_Window.H

@@ -355,7 +355,7 @@ public:
   typedef struct HICON__* HICON;
   // These 2 member functions break the driver model but are kept for back compatibility.
   // They are implemented in Fl_win32.cxx
-  
+
   /** Sets the default window icons (Windows platform only).
 
    Convenience function to set the default icons using Windows'
@@ -376,7 +376,7 @@ public:
    \see Fl_Window::icons(HICON, HICON)
    */
   static void default_icons(HICON big_icon, HICON small_icon);
-  
+
   /** Sets the window icons using HICON handles (Windows platform only).
 
    The given icons are copied. You can free the icons immediately after

configure.ac

@@ -1289,7 +1289,7 @@ AS_CASE([$host_os_gui], [cygwin* | mingw*], [
             ])
         ], [], [#include <X11/Xlib.h>])
     ])
-    
+
     AS_CASE([$host_os], [darwin*], [
       AS_IF([test x$pango_found = xyes], [
         #place X_LIBS after homebrew's pango libs
@@ -1298,7 +1298,7 @@ AS_CASE([$host_os_gui], [cygwin* | mingw*], [
         LDFLAGS="$DARWIN_LDFLAGS"
       ])
     ])
-    
+
     dnl Check for the X11/Xregion.h header file...
     AC_CHECK_HEADER([X11/Xregion.h], [
         AC_DEFINE([HAVE_X11_XREGION_H])

examples/OpenGL3test.cxx

@@ -170,7 +170,7 @@ public:
 
     int retval = Fl_Gl_Window::handle(event);
     if (retval) return retval;
-    
+
     if (event == FL_PUSH && gl_version_major >= 3) {
       static float factor = 1.1;
       GLfloat data[4];

src/Fl_Gl_Window.cxx

@@ -526,7 +526,7 @@ char Fl_Gl_Window_Driver::swap_type() {return UNDEFINED;}
 void* Fl_Gl_Window_Driver::GetProcAddress(const char *procName) {
 #if defined(HAVE_GLXGETPROCADDRESSARB)
   return (void*)glXGetProcAddressARB((const GLubyte *)procName);
-  
+
 #elif (HAVE_DLSYM && HAVE_DLFCN_H)
 #  ifdef RTLD_DEFAULT
       void *rtld_default = RTLD_DEFAULT;

src/Fl_cocoa.mm

@@ -3281,7 +3281,7 @@ void Fl_Cocoa_Window_Driver::resize(int X, int Y, int W, int H) {
     }
     through_resize(0);
   }
-  
+
   // make sure subwindow doesn't leak outside parent
   if (pWindow->parent()) [fl_xid(pWindow) checkSubwindowFrame];
 }

src/drivers/Wayland/Fl_Wayland_Gl_Window_Driver.cxx

@@ -33,7 +33,7 @@
 eglQueryContext() reports that EGL_RENDER_BUFFER equals EGL_BACK_BUFFER.
 This experiment suggests that the platform only supports double-buffer drawing.
 Consequently, FL_DOUBLE is enforced in all Fl_Gl_Window::mode_ values under Wayland.
- 
+
 * Commented out code marked with CONTROL_LEAKING_SUB_GL_WINDOWS aims to prevent
  sub GL windows from leaking out from their parent by making leaking parts fully transparent.
  This code is commented out because it requires the FL_ALPHA flag to be on

src/drivers/Wayland/Fl_Wayland_Window_Driver.cxx

@@ -1479,7 +1479,7 @@ void Fl_Wayland_Window_Driver::resize(int X, int Y, int W, int H) {
       }
     }
   }
-  
+
   if (fl_win && fl_win->kind == SUBWINDOW && fl_win->subsurface)
       checkSubwindowFrame(); // make sure subwindow doesn't leak outside parent
 }