From 8f91533a9a51138b29d2b1d38d33a06dae6e2055 Mon Sep 17 00:00:00 2001
From: Jeff Verkoeyen <jverkoey@gmail.com>
Date: Fri, 15 Jan 2021 12:49:24 -0500
Subject: [PATCH] Revert nil check changes.

---
 Cocoa/Document.m | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Cocoa/Document.m b/Cocoa/Document.m
index 516b6e0..0561074 100644
--- a/Cocoa/Document.m
+++ b/Cocoa/Document.m
@@ -434,7 +434,7 @@ static unsigned *multiplication_table_for_frequency(unsigned frequency)
 
 - (void) run
 {
-    assert(master == nil);
+    assert(!master);
     running = true;
     [self preRun];
     if (slave) {
@@ -2029,7 +2029,7 @@ static unsigned *multiplication_table_for_frequency(unsigned frequency)
 
 - (bool)isSlave
 {
-    return master != nil;
+    return master;
 }
 
 - (GB_gameboy_t *)gb