Strip trailing whitespace.

src/ai/configuration.cpp

@@ -300,8 +300,8 @@ bool configuration::upgrade_side_config_from_1_07_02_to_1_07_03(side_number side
 				break;
 			}
 		}
-	}	
-	
+	}
+
 	if (!is_idle_ai) {
 		parsed_cfg = get_ai_config_for("testing_ai_default");
 	}

src/gui/dialogs/title_screen.cpp

@@ -256,7 +256,7 @@ void ttitle_screen::update_tip(twindow& window, const bool previous)
 	/**
 	 * @todo Need to move the real tips "calculation" to this file so we can
 	 * move through the pages.
-	 * 
+	 *
 	 */
 	if(!find_widget<tmulti_page>(&window, "tips", false, false)) {
 		window.invalidate_layout();

src/video.cpp

@@ -356,7 +356,7 @@ void CVideo::make_test_fake(const unsigned width,
 
 int CVideo::modePossible( int x, int y, int bits_per_pixel, int flags, bool current_screen_optimal )
 {
-	
+
 	int bpp = SDL_VideoModeOK( x, y, bits_per_pixel, get_flags(flags) );
 	if(current_screen_optimal)
 	{