From 1f91bf0f66d29891bf51f756488b5aa4b08af94a Mon Sep 17 00:00:00 2001
From: Jean Pierre Cimalando <jp-dev@inbox.ru>
Date: Fri, 6 Mar 2020 23:43:30 +0100
Subject: [PATCH] Fix a potential null pointer error (effect buses can have
 gaps)

---
 src/sfizz/Synth.cpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/sfizz/Synth.cpp b/src/sfizz/Synth.cpp
index 67dadef1..0ffcfdb8 100644
--- a/src/sfizz/Synth.cpp
+++ b/src/sfizz/Synth.cpp
@@ -459,8 +459,10 @@ void sfz::Synth::setSamplesPerBlock(int samplesPerBlock) noexcept
     this->tempMixNodeBuffer.resize(samplesPerBlock);
     for (auto& voice : voices)
         voice->setSamplesPerBlock(samplesPerBlock);
-    for (auto& bus : effectBuses)
-        bus->setSamplesPerBlock(samplesPerBlock);
+    for (size_t i = 0, n = effectBuses.size(); i < n; ++i) {
+        if (EffectBus* bus = effectBuses[i].get())
+            bus->setSamplesPerBlock(samplesPerBlock);
+    }
 }
 
 void sfz::Synth::setSampleRate(float sampleRate) noexcept