Add ToCStr method .with_c_str()

.with_c_str() is a replacement for the old .as_c_str(), to avoid
unnecessary boilerplate.

Replace all usages of .to_c_str().with_ref() with .with_c_str().

1 files changed, 1 insertions, 1 deletions

diff --git a/src/libstd/rt/logging.rs b/src/libstd/rt/logging.rs
index 117795f6c90..4ee65a2b449 100644
--- a/src/libstd/rt/logging.rs
+++ b/src/libstd/rt/logging.rs
@@ -66,7 +66,7 @@ pub fn init(crate_map: *u8) {
     let log_spec = os::getenv("RUST_LOG");
     match log_spec {
         Some(spec) => {
-            do spec.to_c_str().with_ref |buf| {
+            do spec.with_c_str |buf| {
                 unsafe { rust_update_log_settings(crate_map, buf) }
             }
         }