Fix memory leak. am: 4eba557902 am: ffdc436b68 am: ae4589fef8

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/rustc-demangle-capi/+/2383915

Change-Id: I7f9501095d0a771e541fa5908a0b367a02e9c61c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>

1 files changed, 1 insertions, 2 deletions

diff --git a/src/lib.rs b/src/lib.rs
index 7610145..d220ec1 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -163,10 +163,9 @@ unsafe fn rustc_demangle_native(
         }
     }
 
-    let mut out_buf = SystemBuffer::from_raw(out, out_size)?;
-
     match rustc_demangle::try_demangle(mangled_str) {
         Ok(demangle) => {
+            let mut out_buf = SystemBuffer::from_raw(out, out_size)?;
             while write!(out_buf.as_mut_slice(), "{:#}\0", demangle).is_err() {
                 out_buf.resize()?;
             }