fix warnings in conversation input toolbar

Signal/src/ViewControllers/ConversationView/ConversationInputToolbar.h

@@ -35,6 +35,8 @@ NS_ASSUME_NONNULL_BEGIN
 @interface ConversationInputToolbar : UIView
 
 - (instancetype)initWithConversationStyle:(ConversationStyle *)conversationStyle NS_DESIGNATED_INITIALIZER;
+- (instancetype)initWithCoder:(NSCoder *)aDecoder NS_UNAVAILABLE;
+- (instancetype)initWithFrame:(CGRect)frame NS_UNAVAILABLE;
 
 @property (nonatomic, weak) id<ConversationInputToolbarDelegate> inputToolbarDelegate;
 

Signal/src/ViewControllers/ConversationView/ConversationInputToolbar.m

@@ -70,7 +70,7 @@ static const CGFloat ConversationInputToolbarBorderViewHeight = 0.5;
 
 - (instancetype)initWithConversationStyle:(ConversationStyle *)conversationStyle
 {
-    self = [super init];
+    self = [super initWithFrame:CGRectZero];
 
     _conversationStyle = conversationStyle;