Optimize Tool::to_command (#1535)

Remove unnec intermediate Vec for storing args

Author: NobodyXu

src/tool.rs

@@ -388,16 +388,12 @@ impl Tool {
         };
         cmd.args(&self.cc_wrapper_args);
 
-        let value = self
-            .args
-            .iter()
-            .filter(|a| !self.removed_args.contains(a))
-            .collect::<Vec<_>>();
-        cmd.args(&value);
+        cmd.args(self.args.iter().filter(|a| !self.removed_args.contains(a)));
 
         for (k, v) in self.env.iter() {
             cmd.env(k, v);
         }
+
         cmd
     }