Apply minor changes

src/tools/rust-analyzer/crates/rust-analyzer/src/config.rs

@@ -845,7 +845,7 @@ impl Config {
         }
 
         // IMPORTANT : This holds as long as ` completion_snippets_custom` is declared `client`.
-        config.snippets = vec![];
+        config.snippets.clear();
 
         let snips = self.completion_snippets_custom().to_owned();