address gemini-code-assist feedback

Signed-off-by: Terence Lee <hone02@gmail.com>

Author: hone

crates/system-reinstall-bootc/src/main.rs

@@ -51,10 +51,12 @@ impl ReinstallOptsArgs {
             os_release::get_bootc_image_from_file(ETC_OS_RELEASE)
                 .ok()
                 .flatten()
+                .filter(|s| !s.is_empty())
                 .or_else(|| {
                     os_release::get_bootc_image_from_file(USR_LIB_OS_RELEASE)
                         .ok()
                         .flatten()
+                        .filter(|s| !s.is_empty())
                 })
                 .ok_or_else(|| {
                     anyhow::anyhow!(
@@ -72,6 +74,8 @@ impl ReinstallOptsArgs {
 
 #[context("run")]
 fn run() -> Result<()> {
+    let args = ReinstallOptsArgs::parse();
+
     // We historically supported an environment variable providing a config to override the image, so
     // keep supporting that. I'm considering deprecating that though.
     let opts = if let Some(config) = config::ReinstallConfig::load().context("loading config")? {
@@ -81,7 +85,7 @@ fn run() -> Result<()> {
         }
     } else {
         // Otherwise an image is specified via the CLI or fallback to the os-release
-        ReinstallOptsArgs::parse().build()?
+        args.build()?
     };
 
     bootc_utils::initialize_tracing();