Ensure that all members of LinearView and HexEditor are initialized

Most members were initialized within the constructor, but a couple were
only initialized later and could in some cases be accessed before being
initialized.

Members of types without default constructors are now initialized via
default member initializers unless they're initialized in the class's
member initializer list.

Author: bdash

ui/hexeditor.h

@@ -196,29 +196,35 @@ class BINARYNINJAUIAPI HexEditor :
 	ViewFrame* m_view;
 
 	std::vector<HexEditorLine> m_lines;
-	size_t m_topLine;
-	uint64_t m_topAddr, m_bottomAddr;
+	size_t m_topLine = 0;
+	uint64_t m_topAddr = 0;
+	uint64_t m_bottomAddr = 0;
 
 	std::vector<BNAddressRange> m_ranges;
-	uint64_t m_allocatedLength;
-	uint64_t m_scrollBarMultiplier;
-	int m_wheelDelta;
-	bool m_updatingScrollBar;
-	bool m_updatesRequired;
-
-	uint64_t m_minAddr;
-	uint64_t m_cursorAddr, m_prevCursorAddr;
-	int m_cursorOffset;
-	uint64_t m_selectionStartAddr;
-	int m_cols, m_visibleRows;
-	int m_lastMouseX, m_lastMouseY;
-	bool m_selectionVisible;
-	bool m_cursorAscii;
-	bool m_caretVisible, m_caretBlink;
-	bool m_insertMode;
+	uint64_t m_allocatedLength = 0;
+	uint64_t m_scrollBarMultiplier = 0;
+	int m_wheelDelta = 0;
+	bool m_updatingScrollBar = false;
+	bool m_updatesRequired = false;
+
+	uint64_t m_minAddr = 0;
+	uint64_t m_cursorAddr = 0;
+	uint64_t m_prevCursorAddr = 0;
+	int m_cursorOffset = 0;
+	uint64_t m_selectionStartAddr = 0;
+	int m_cols = 0;
+	int m_visibleRows = 1;
+	int m_lastMouseX = 0;
+	int m_lastMouseY = 0;
+	bool m_selectionVisible = false;
+	bool m_cursorAscii = false;
+	bool m_caretVisible = false;
+	bool m_caretBlink = true;
+	bool m_insertMode = false;
 	QString m_status;
-	QTimer* m_cursorTimer;
-	Qt::KeyboardModifiers m_ctrl, m_command;
+	QTimer* m_cursorTimer = nullptr;
+	Qt::KeyboardModifiers m_ctrl = Qt::ControlModifier;
+	Qt::KeyboardModifiers m_command = Qt::MetaModifier;
 
 	RenderContext m_render;
 	HexEditorHighlightState m_highlightState;

ui/linearview.h

@@ -187,24 +187,25 @@ class BINARYNINJAUIAPI LinearView : public QAbstractScrollArea, public View, pub
 
 	BinaryViewRef m_data;
 	ViewFrame* m_view;
-	uint64_t m_allocatedLength;
+	uint64_t m_allocatedLength = 0;
 
-	StickyHeader* m_header;
+	StickyHeader* m_header = nullptr;
 	RenderContext m_render;
-	int m_cols, m_rows;
-	uint64_t m_scrollBarMultiplier;
-	int m_wheelDelta;
-	bool m_updatingScrollBar;
+	int m_cols = 0;
+	int m_rows = 0;
+	uint64_t m_scrollBarMultiplier = 0;
+	int m_wheelDelta = 0;
+	bool m_updatingScrollBar = false;
 
-	std::atomic<bool> m_updatesRequired;
-	bool m_updateBounds;
+	std::atomic<bool> m_updatesRequired = false;
+	bool m_updateBounds = false;
 
 	LinearViewCursorPosition m_cursorPos, m_selectionStartPos;
-	bool m_cursorAscii;
+	bool m_cursorAscii = false;
 	bool m_tokenSelection = false;
 	HighlightTokenState m_highlight;
 	bool m_displayCollapseIndicators = false;
-	uint64_t m_navByRefTarget;
+	uint64_t m_navByRefTarget = 0;
 	bool m_navByRef = false;
 	bool m_doubleClickLatch = false;
 	FunctionRef m_relatedHighlightFunction;
@@ -217,27 +218,27 @@ class BINARYNINJAUIAPI LinearView : public QAbstractScrollArea, public View, pub
 	HexEditorHighlightState m_highlightState;
 	bool m_singleFunctionView = false;
 
-	InstructionEdit* m_instrEdit;
+	InstructionEdit* m_instrEdit = nullptr;
 
-	BNAddressRange m_cacheBounds;
+	BNAddressRange m_cacheBounds = { 0, 0 };
 	std::vector<BNAddressRange> m_cachedRegions;
 	std::shared_mutex m_cacheMutex;
 	BinaryNinja::Ref<BinaryNinja::LinearViewCursor> m_topPosition, m_bottomPosition;
 	std::vector<LinearViewLine> m_lines;
-	size_t m_emptyPrevCursors;
-	size_t m_emptyNextCursors;
-	size_t m_topLine;
+	size_t m_emptyPrevCursors = 0;
+	size_t m_emptyNextCursors = 0;
+	size_t m_topLine = 0;
 	std::optional<double> m_topOrderingIndexOffset;
 
-	QTimer* m_hoverTimer;
+	QTimer* m_hoverTimer = nullptr;
 	QPointF m_previewPos;
 
 	ContextMenuManager* m_contextMenuManager;
 	QPointer<CommentDialog> m_commentDialog;
 
 	std::map<FunctionRef, BinaryNinja::AdvancedFunctionAnalysisDataRequestor> m_analysisRequestors;
 
-	std::string m_navigationMode = "";
+	std::string m_navigationMode;
 
 	ClickableIcon* m_dataButton = nullptr;
 	QWidget* m_dataButtonContainer = nullptr;