Fix missing endif

Author: Cuda-Chen

Makefile

@@ -62,14 +62,15 @@ ifeq ($(UNAME_S),Darwin)
     ifeq (0, $(call check-coreaudio))
         $(warning No CoreAudio framework installed.)
         ENABLE_VIRTIOSND := 0
+    endif
 endif
 $(call set-feature, VIRTIOSND)
 ifeq ($(call has, VIRTIOSND), 1)
     OBJS_EXTRA += virtio-snd.o
 
     ifeq ($(UNAME_S),Linux)
         LDFLAGS += -lasound -lpthread
-    else ifeq($(UNAME_S),Darwin)
+    else ifeq ($(UNAME_S),Darwin)
         LDFLAGS += lpthread
         CFLAGS += -framework CoreAudio
     endif