gallium: fix remaining users of pipe_reference function

src/gallium/drivers/nouveau/nouveau_stateobj.h

@@ -48,13 +48,14 @@ so_ref(struct nouveau_stateobj *ref, struct nouveau_stateobj **pso)
 	struct nouveau_stateobj *so = *pso;
 	int i;
 
-        if (pipe_reference((struct pipe_reference**)pso, &ref->reference)) {
+        if (pipe_reference(&(*pso)->reference, &ref->reference)) {
 		free(so->push);
 		for (i = 0; i < so->cur_reloc; i++)
 			nouveau_bo_ref(NULL, &so->reloc[i].bo);
 		free(so->reloc);
 		free(so);
 	}
+	*pso = ref;
 }
 
 static INLINE void

src/gallium/state_trackers/python/st_device.c

@@ -62,8 +62,9 @@ st_device_reference(struct st_device **ptr, struct st_device *st_dev)
 {
    struct st_device *old_dev = *ptr;
 
-   if (pipe_reference((struct pipe_reference **)ptr, &st_dev->reference))
+   if (pipe_reference(&(*ptr)->reference, &st_dev->reference))
       st_device_really_destroy(old_dev);
+   *ptr = st_dev;
 }
 
 

src/gallium/winsys/drm/intel/gem/intel_drm_fence.c

@@ -39,11 +39,12 @@ intel_drm_fence_reference(struct intel_winsys *iws,
    struct intel_drm_fence *old = (struct intel_drm_fence *)*ptr;
    struct intel_drm_fence *f = (struct intel_drm_fence *)fence;
 
-   if (pipe_reference((struct pipe_reference**)ptr, &f->reference)) {
+   if (pipe_reference(&(*ptr)->reference, &f->reference)) {
       if (old->bo)
          drm_intel_bo_unreference(old->bo);
       FREE(old);
    }
+   *ptr = fence;
 }
 
 static int

src/gallium/winsys/drm/vmware/core/vmw_surface.c

@@ -47,7 +47,7 @@ vmw_svga_winsys_surface_reference(struct vmw_svga_winsys_surface **pdst,
    src_ref = src ? &src->refcnt : NULL;
    dst_ref = dst ? &dst->refcnt : NULL;
 
-   if (pipe_reference(&dst_ref, src_ref)) {
+   if (pipe_reference(dst_ref, src_ref)) {
       vmw_ioctl_surface_destroy(dst->screen, dst->sid);
 #ifdef DEBUG
       /* to detect dangling pointers */