From 2f924671475b876d6d97d1336f27e4246d24acde Mon Sep 17 00:00:00 2001
From: Weipin Xia <xia@weip.in>
Date: Sun, 27 Jun 2021 11:05:58 +0800
Subject: [PATCH] Swift Client: Fix double deallocation

---
 native_client/swift/deepspeech_ios/DeepSpeech.swift | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/native_client/swift/deepspeech_ios/DeepSpeech.swift b/native_client/swift/deepspeech_ios/DeepSpeech.swift
index 77a6a81817..43d2669bfd 100644
--- a/native_client/swift/deepspeech_ios/DeepSpeech.swift
+++ b/native_client/swift/deepspeech_ios/DeepSpeech.swift
@@ -283,7 +283,10 @@ public class DeepSpeechStream {
         precondition(streamCtx != nil, "calling method on invalidated Stream")
 
         let result = DS_FinishStreamWithMetadata(streamCtx, UInt32(numResults))!
-        defer { DS_FreeMetadata(result) }
+        defer {
+            DS_FreeMetadata(result)
+            streamCtx = nil
+        }
         return DeepSpeechMetadata(fromInternal: result)
     }
 }