Move alignment code to obs_reset_video

It wasn't properly being set for the graphics textures as well, so it
would end up causing SSE to crash due to alignment

libobs/obs.c

@@ -129,9 +129,6 @@ static bool obs_init_video(struct obs_video_info *ovi)
 	struct video_output_info vi;
 	int errorcode;
 
-	ovi->output_width  &= 0xFFFFFFFC;
-	ovi->output_height &= 0xFFFFFFFE;
-
 	make_video_info(&vi, ovi);
 	errorcode = video_output_open(&video->video, &vi);
 
@@ -357,6 +354,9 @@ bool obs_reset_video(struct obs_video_info *ovi)
 {
 	struct obs_core_video *video = &obs->video;
 
+	ovi->output_width  &= 0xFFFFFFFC;
+	ovi->output_height &= 0xFFFFFFFE;
+
 	obs_free_video();
 
 	if (!ovi) {