3 files changed, 4 insertions, 8 deletions
diff --git a/video/mp_image.c b/video/mp_image.c
index 4015f27d4a..3bc76b669e 100644
--- a/video/mp_image.c
+++ b/video/mp_image.c
@@ -62,11 +62,10 @@ struct m_refcount {
 };
 
 // Only for checking API usage
-static int m_refcount_destructor(void *ptr)
+static void m_refcount_destructor(void *ptr)
 {
     struct m_refcount *ref = ptr;
     assert(ref->refcount == 0);
-    return 0;
 }
 
 // Starts out with refcount==1, caller can set .arg and .free and .ext_*
@@ -165,11 +164,10 @@ void mp_image_setfmt(struct mp_image *mpi, unsigned int out_fmt)
     mp_image_set_size(mpi, mpi->w, mpi->h);
 }
 
-static int mp_image_destructor(void *ptr)
+static void mp_image_destructor(void *ptr)
 {
     mp_image_t *mpi = ptr;
     m_refcount_unref(mpi->refcount);
-    return 0;
 }
 
 static int mp_chroma_div_up(int size, int shift)
diff --git a/video/mp_image_pool.c b/video/mp_image_pool.c
index 733f2059b4..1ef08b5e2d 100644
--- a/video/mp_image_pool.c
+++ b/video/mp_image_pool.c
@@ -58,11 +58,10 @@ struct image_flags {
     bool pool_alive;            // the mp_image_pool references this
 };
 
-static int image_pool_destructor(void *ptr)
+static void image_pool_destructor(void *ptr)
 {
     struct mp_image_pool *pool = ptr;
     mp_image_pool_clear(pool);
-    return 0;
 }
 
 struct mp_image_pool *mp_image_pool_new(int max_count)
diff --git a/video/sws_utils.c b/video/sws_utils.c
index bc9c408b3e..c90efe020c 100644
--- a/video/sws_utils.c
+++ b/video/sws_utils.c
@@ -150,13 +150,12 @@ static bool cache_valid(struct mp_sws_context *ctx)
            ctx->saturation == old->saturation;
 }
 
-static int free_mp_sws(void *p)
+static void free_mp_sws(void *p)
 {
     struct mp_sws_context *ctx = p;
     sws_freeContext(ctx->sws);
     sws_freeFilter(ctx->src_filter);
     sws_freeFilter(ctx->dst_filter);
-    return 0;
 }
 
 // You're supposed to set your scaling parameters on the returned context.