Avoid more instances of unused command execution in dry run

Author: Kobzol

src/bootstrap/src/core/build_steps/dist.rs

@@ -2068,11 +2068,7 @@ fn maybe_install_llvm(
         let mut cmd = command(llvm_config);
         cmd.arg("--libfiles");
         builder.verbose(|| println!("running {cmd:?}"));
-        let files = if builder.config.dry_run() {
-            "".into()
-        } else {
-            cmd.capture_stdout().run(builder).stdout()
-        };
+        let files = cmd.capture_stdout().run(builder).stdout();
         let build_llvm_out = &builder.llvm_out(builder.config.build);
         let target_llvm_out = &builder.llvm_out(target);
         for file in files.trim_end().split(' ') {

src/bootstrap/src/core/build_steps/test.rs

@@ -471,16 +471,12 @@ impl Miri {
         // We re-use the `cargo` from above.
         cargo.arg("--print-sysroot");
 
-        if builder.config.dry_run() {
-            String::new()
-        } else {
-            builder.verbose(|| println!("running: {cargo:?}"));
-            let stdout = cargo.capture_stdout().run(builder).stdout();
-            // Output is "<sysroot>\n".
-            let sysroot = stdout.trim_end();
-            builder.verbose(|| println!("`cargo miri setup --print-sysroot` said: {sysroot:?}"));
-            sysroot.to_owned()
-        }
+        builder.verbose(|| println!("running: {cargo:?}"));
+        let stdout = cargo.capture_stdout().run(builder).stdout();
+        // Output is "<sysroot>\n".
+        let sysroot = stdout.trim_end();
+        builder.verbose(|| println!("`cargo miri setup --print-sysroot` said: {sysroot:?}"));
+        sysroot.to_owned()
     }
 }