diff --git a/block/snapshot.c b/block/snapshot.c
index 6e16eb803a..55974273ae 100644
--- a/block/snapshot.c
+++ b/block/snapshot.c
@@ -629,7 +629,6 @@ int bdrv_all_goto_snapshot(const char *name,
     while (iterbdrvs) {
         BlockDriverState *bs = iterbdrvs->data;
         AioContext *ctx = bdrv_get_aio_context(bs);
-        int ret = 0;
         bool all_snapshots_includes_bs;
 
         aio_context_acquire(ctx);
@@ -637,9 +636,8 @@ int bdrv_all_goto_snapshot(const char *name,
         all_snapshots_includes_bs = bdrv_all_snapshots_includes_bs(bs);
         bdrv_graph_rdunlock_main_loop();
 
-        if (devices || all_snapshots_includes_bs) {
-            ret = bdrv_snapshot_goto(bs, name, errp);
-        }
+        ret = (devices || all_snapshots_includes_bs) ?
+              bdrv_snapshot_goto(bs, name, errp) : 0;
         aio_context_release(ctx);
         if (ret < 0) {
             bdrv_graph_rdlock_main_loop();
diff --git a/meson.build b/meson.build
index d7d841e71e..ec01f8b138 100644
--- a/meson.build
+++ b/meson.build
@@ -462,6 +462,7 @@ warn_flags = [
   '-Wno-tautological-type-limit-compare',
   '-Wno-psabi',
   '-Wno-gnu-variable-sized-type-not-at-end',
+  '-Wshadow=local',
 ]
 
 if targetos != 'darwin'