Accept review suggestions from PR #301

Co-authored-by: Philipp Oppermann <dev@phil-opp.com>

Author: jasoncouture

src/lib.rs

@@ -37,11 +37,9 @@ impl BiosBoot {
     }
 
     /// Add a ramdisk file to the image
-    pub fn with_ramdisk(&self, ramdisk_path: &Path) -> Self {
-        Self {
-            kernel: self.kernel.to_owned(),
-            ramdisk: Some(ramdisk_path.to_owned()),
-        }
+    pub fn set_ramdisk(&mut self, ramdisk_path: &Path) -> &mut Self {
+        self.ramdisk = Some(ramdisk_path.to_owned());
+        self
     }
 
     /// Create a bootable UEFI disk image at the given path.
@@ -81,7 +79,7 @@ impl BiosBoot {
         files.insert(KERNEL_FILE_NAME, kernel_path);
         files.insert(BIOS_STAGE_3, stage_3_path);
         files.insert(BIOS_STAGE_4, stage_4_path);
-        if has_rd_path {
+        if let Some(ramdisk_path) = &self.ramdisk {
             files.insert(RAMDISK_FILE_NAME, ramdisk_path);
         }
         let out_file = NamedTempFile::new().context("failed to create temp file")?;