obs-transitions: Fix compiler warning

Fix unused parameter warning.

plugins/obs-transitions/transition-cut.c

@@ -61,6 +61,9 @@ static enum gs_color_space
 cut_video_get_color_space(void *data, size_t count,
 			  const enum gs_color_space *preferred_spaces)
 {
+	UNUSED_PARAMETER(count);
+	UNUSED_PARAMETER(preferred_spaces);
+
 	struct cut_info *const cut = data;
 	return obs_transition_video_get_color_space(cut->source);
 }

plugins/obs-transitions/transition-luma-wipe.c

@@ -214,6 +214,9 @@ static enum gs_color_space
 luma_wipe_video_get_color_space(void *data, size_t count,
 				const enum gs_color_space *preferred_spaces)
 {
+	UNUSED_PARAMETER(count);
+	UNUSED_PARAMETER(preferred_spaces);
+
 	struct luma_wipe_info *const lwipe = data;
 	return obs_transition_video_get_color_space(lwipe->source);
 }

plugins/obs-transitions/transition-slide.c

@@ -161,6 +161,9 @@ static enum gs_color_space
 slide_video_get_color_space(void *data, size_t count,
 			    const enum gs_color_space *preferred_spaces)
 {
+	UNUSED_PARAMETER(count);
+	UNUSED_PARAMETER(preferred_spaces);
+
 	struct slide_info *const slide = data;
 	return obs_transition_video_get_color_space(slide->source);
 }

plugins/obs-transitions/transition-swipe.c

@@ -157,6 +157,9 @@ static enum gs_color_space
 swipe_video_get_color_space(void *data, size_t count,
 			    const enum gs_color_space *preferred_spaces)
 {
+	UNUSED_PARAMETER(count);
+	UNUSED_PARAMETER(preferred_spaces);
+
 	struct swipe_info *const swipe = data;
 	return obs_transition_video_get_color_space(swipe->source);
 }