From 919338130aa5baeb3b635e9709df296d061cc40e Mon Sep 17 00:00:00 2001
From: ed <eddavies95@gmail.com>
Date: Tue, 4 Jun 2019 17:09:41 +0100
Subject: [PATCH] Fixed a potential deadlock in
 MPESynthesiser::turnOffAllVoices()

---
 .../juce_audio_basics/mpe/juce_MPESynthesiser.cpp    | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/modules/juce_audio_basics/mpe/juce_MPESynthesiser.cpp b/modules/juce_audio_basics/mpe/juce_MPESynthesiser.cpp
index e53a4003d287..8eaf95ce7d02 100644
--- a/modules/juce_audio_basics/mpe/juce_MPESynthesiser.cpp
+++ b/modules/juce_audio_basics/mpe/juce_MPESynthesiser.cpp
@@ -299,12 +299,14 @@ void MPESynthesiser::reduceNumVoices (const int newNumVoices)
 
 void MPESynthesiser::turnOffAllVoices (bool allowTailOff)
 {
-    const ScopedLock sl (voicesLock);
+    {
+        const ScopedLock sl (voicesLock);
 
-    // first turn off all voices (it's more efficient to do this immediately
-    // rather than to go through the MPEInstrument for this).
-    for (auto* voice : voices)
-        voice->noteStopped (allowTailOff);
+        // first turn off all voices (it's more efficient to do this immediately
+        // rather than to go through the MPEInstrument for this).
+        for (auto* voice : voices)
+            voice->noteStopped (allowTailOff);
+    }
 
     // finally make sure the MPE Instrument also doesn't have any notes anymore.
     instrument->releaseAllNotes();