add FlowGraphWidget::addressForCall helper API

Author: plafosse

ui/flowgraphwidget.h

@@ -201,6 +201,7 @@ class BINARYNINJAUIAPI FlowGraphWidget :
 	void selectAll();
 	void selectNone();
 	void navigateToHighlightedToken();
+	std::optional<uint64_t> addressForCall();
 
 	uint64_t getTokenAddress();
 

ui/linearview.h

@@ -376,6 +376,7 @@ private Q_SLOTS:
 
 	void editInstruction();
 	void instrEditDoneEvent();
+	std::optional<uint64_t> addressForCall();
 
 	void setCurrentVariableDeadStoreElimination(BNDeadStoreElimination elimination);
 
@@ -470,7 +471,6 @@ private Q_SLOTS:
 
 	bool singleFunctionView() const { return m_singleFunctionView; }
 	void setSingleFunctionView(bool singleFunctionView);
-	std::optional<uint64_t> addressForCall();
 
 	static void registerActions();