[c] Fix for #1352, the last subsequent attachment timeline always mixes out to the setup pose.

spine-c/spine-c/src/spine/AnimationState.c

@@ -468,7 +468,10 @@ float _spAnimationState_applyMixingFrom (spAnimationState* self, spTrackEntry* t
 
 			switch (timelineMode->items[i] & (NOT_LAST - 1)) {
 				case SUBSEQUENT:
-					if (!attachments && timeline->type == SP_TIMELINE_ATTACHMENT) continue;
+					if (!attachments && timeline->type == SP_TIMELINE_ATTACHMENT) {
+						if ((timelineMode->items[i] & NOT_LAST) == NOT_LAST) continue;
+						blend = SP_MIX_BLEND_SETUP;
+					}
 					if (!drawOrder && timeline->type == SP_TIMELINE_DRAWORDER) continue;
 					timelineBlend = blend;
 					alpha = alphaMix;