Debugger: Modernize

modernize-use-auto
modernize-use-nullptr
modernize-use-override
modernize-use-using
modernize-use-default-member-init
modernize-use-equals-default

Change-Id: I91a6874f0d7b94e9079ab4ef07c23c60c80be9c0
Reviewed-by: Christian Stenger <christian.stenger@qt.io>
Reviewed-by: hjk <hjk@qt.io>

src/plugins/debugger/stackframe.h

@@ -53,21 +53,21 @@ public:
     void fixQrcFrame(const DebuggerRunParameters &rp);
 
 public:
-    DebuggerLanguage language;
+    DebuggerLanguage language = CppLanguage;
     QString level;
     QString function;
     QString file;        // We try to put an absolute file name in there.
     QString module;      // Sometimes something like "/usr/lib/libstdc++.so.6"
     QString receiver;    // Used in ScriptEngine only.
-    qint32 line;
-    quint64 address;
-    bool usable;
+    qint32 line = -1;
+    quint64 address = 0;
+    bool usable = false;
     QString context;  // Opaque value produced and consumed by the native backends.
 
     Q_DECLARE_TR_FUNCTIONS(Debugger::Internal::StackHandler)
 };
 
-typedef QList<StackFrame> StackFrames;
+using StackFrames = QList<StackFrame>;
 
 } // namespace Internal
 } // namespace Debugger