compositor-drm: Clean trailing whitespace

Signed-off-by: Daniel Stone <daniels@collabora.com>

src/compositor-drm.c

@@ -1221,10 +1221,10 @@ choose_mode (struct drm_output *output, struct weston_mode *target_mode)
 	wl_list_for_each(mode, &output->base.mode_list, base.link) {
 		if (mode->mode_info.hdisplay == target_mode->width &&
 		    mode->mode_info.vdisplay == target_mode->height) {
-			if (mode->mode_info.vrefresh == target_mode->refresh || 
+			if (mode->mode_info.vrefresh == target_mode->refresh ||
           		    target_mode->refresh == 0) {
 				return mode;
-			} else if (!tmp_mode) 
+			} else if (!tmp_mode)
 				tmp_mode = mode;
 		}
 	}
@@ -2415,7 +2415,7 @@ update_outputs(struct drm_compositor *ec, struct udev_device *drm_device)
 		}
 	}
 
-	/* FIXME: handle zero outputs, without terminating */	
+	/* FIXME: handle zero outputs, without terminating */
 	if (ec->connector_allocator == 0)
 		wl_display_terminate(ec->base.wl_display);
 }
@@ -2509,7 +2509,7 @@ drm_compositor_set_modes(struct drm_compositor *compositor)
 		if (ret < 0) {
 			weston_log(
 				"failed to set mode %dx%d for output at %d,%d: %m\n",
-				drm_mode->base.width, drm_mode->base.height, 
+				drm_mode->base.width, drm_mode->base.height,
 				output->base.x, output->base.y);
 		}
 	}