3 files changed, 17 insertions, 10 deletions
diff --git a/platform/darwin/src/NSExpression+MGLAdditions.h b/platform/darwin/src/NSExpression+MGLAdditions.h
index 9ef6623068..a19ec1af2e 100644
--- a/platform/darwin/src/NSExpression+MGLAdditions.h
+++ b/platform/darwin/src/NSExpression+MGLAdditions.h
@@ -190,7 +190,7 @@ FOUNDATION_EXTERN MGL_EXPORT const MGLExpressionInterpolationMode MGLExpressionI
  @return An initialized expression equivalent to `object`, suitable for use as
     the value of a style layer attribute.
  */
-+ (instancetype)expressionWithMGLJSONObject:(nullable id)object NS_SWIFT_NAME(init(mglJSONObject:));
++ (instancetype)expressionWithMGLJSONObject:(id)object NS_SWIFT_NAME(init(mglJSONObject:));
 
 /**
  An equivalent Foundation object that can be serialized as JSON.
diff --git a/platform/darwin/src/NSExpression+MGLAdditions.mm b/platform/darwin/src/NSExpression+MGLAdditions.mm
index 026d8bec02..b3060b5787 100644
--- a/platform/darwin/src/NSExpression+MGLAdditions.mm
+++ b/platform/darwin/src/NSExpression+MGLAdditions.mm
@@ -792,6 +792,9 @@ NSArray *MGLSubexpressionsWithJSONObjects(NSArray *objects) {
             } else if ([curveType isEqualToString:@"cubic-bezier"]) {
                 curveParameters = @[@"literal", [interpolationOptions subarrayWithRange:NSMakeRange(1, 4)]];
             }
+            else {
+                curveParameters = [NSNull null];
+            }
             NSExpression *curveParameterExpression = [NSExpression expressionWithMGLJSONObject:curveParameters];
             argumentObjects = [argumentObjects subarrayWithRange:NSMakeRange(1, argumentObjects.count - 1)];
             NSExpression *inputExpression = [NSExpression expressionWithMGLJSONObject:argumentObjects.firstObject];
diff --git a/platform/darwin/src/reachability.m b/platform/darwin/src/reachability.m
index 2030e7ef71..737145a8a7 100644
--- a/platform/darwin/src/reachability.m
+++ b/platform/darwin/src/reachability.m
@@ -100,6 +100,8 @@ static void TMReachabilityCallback(SCNetworkReachabilityRef target, SCNetworkRea
     {
         id reachability = [[self alloc] initWithReachabilityRef:ref];
 
+        CFRelease(ref);
+        
         return reachability;
     }
 
@@ -113,6 +115,8 @@ static void TMReachabilityCallback(SCNetworkReachabilityRef target, SCNetworkRea
     {
         id reachability = [[self alloc] initWithReachabilityRef:ref];
 
+        CFRelease(ref);
+        
         return reachability;
     }
 
@@ -149,13 +153,13 @@ static void TMReachabilityCallback(SCNetworkReachabilityRef target, SCNetworkRea
     self = [super init];
     if (self != nil)
     {
-        self.reachableOnWWAN = YES;
-        self.reachabilityRef = ref;
+        _reachableOnWWAN = YES;
+        _reachabilityRef = CFRetain(ref);
 
         // We need to create a serial queue.
         // We allocate this once for the lifetime of the notifier.
 
-        self.reachabilitySerialQueue = dispatch_queue_create("com.tonymillion.reachability", NULL);
+        _reachabilitySerialQueue = dispatch_queue_create("com.tonymillion.reachability", NULL);
     }
 
     return self;
@@ -165,15 +169,15 @@ static void TMReachabilityCallback(SCNetworkReachabilityRef target, SCNetworkRea
 {
     [self stopNotifier];
 
-    if(self.reachabilityRef)
+    if(_reachabilityRef)
     {
-        CFRelease(self.reachabilityRef);
-        self.reachabilityRef = nil;
+        CFRelease(_reachabilityRef);
+        _reachabilityRef = nil;
     }
 
-    self.reachableBlock          = nil;
-    self.unreachableBlock        = nil;
-    self.reachabilitySerialQueue = nil;
+    _reachableBlock          = nil;
+    _unreachableBlock        = nil;
+    _reachabilitySerialQueue = nil;
 }
 
 #pragma mark - Notifier Methods