chore: per review

src/cmd/src/bin/greptime.rs

@@ -64,7 +64,7 @@ enum SubCommand {
 static ALLOC: tikv_jemallocator::Jemalloc = tikv_jemallocator::Jemalloc;
 
 fn main() -> Result<()> {
-    // Set the stack size to 8MB for the thread so it wouldn't crash on large stack usage in debug mode
+    // Set the stack size to 8MB for the thread so it wouldn't overflow on large stack usage in debug mode
     // see https://github.com/GreptimeTeam/greptimedb/pull/4317
     // and https://github.com/rust-lang/rust/issues/34283
     let builder = std::thread::Builder::new().name("main_spawn".to_string());
@@ -83,11 +83,11 @@ fn main() -> Result<()> {
                 #[cfg(debug_assertions)]
                 let builder = builder.thread_stack_size(8 * 1024 * 1024);
 
-                return builder
+                builder
                     .enable_all()
                     .build()
                     .expect("Failed building the Runtime")
-                    .block_on(body);
+                    .block_on(body)
             }
         })
         .context(SpawnThreadSnafu)?