Fix lints from Rust 1.60.0

Bug: 222737227
Test: m rust
Change-Id: Idd2c37516565950d82781b5cb05095548368d5fd
diff --git a/libstats/pull_rust/stats_pull.rs b/libstats/pull_rust/stats_pull.rs
index 174125e..09b2623 100644
--- a/libstats/pull_rust/stats_pull.rs
+++ b/libstats/pull_rust/stats_pull.rs
@@ -68,7 +68,7 @@
     }
 
     /// Calls AStatsManager_PullAtomMetadata_setAdditiveFields.
-    pub fn set_additive_fields(&mut self, additive_fields: &mut Vec<i32>) {
+    pub fn set_additive_fields(&mut self, additive_fields: &mut [i32]) {
         // Safety: Metadata::new ensures that self.metadata is a valid object.
         unsafe {
             AStatsManager_PullAtomMetadata_setAdditiveFields(