Use Result instead of Option due to upcoming changes

Author: dmitrylavrenov

crates/humanode-peer/src/cli/init.rs

@@ -38,7 +38,7 @@ const RECOMMENDED_OPEN_FILE_DESCRIPTOR_LIMIT: u64 = 10_000;
 /// We require a substantial amount of fds for the networking, so raise it, and report if the raised
 /// limit is still way too low.
 pub fn raise_fd_limit() {
-    if let Some(new_limit) = fdlimit::raise_fd_limit() {
+    if let Ok(new_limit) = fdlimit::raise_fd_limit() {
         if new_limit < RECOMMENDED_OPEN_FILE_DESCRIPTOR_LIMIT {
             tracing::warn!(
                 "Low open file descriptor limit configured for the process. \