citra-qt: Add missing #pragma once directives

src/citra_qt/bootmanager.h

@@ -2,6 +2,8 @@
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 
+#pragma once
+
 #include <atomic>
 #include <condition_variable>
 #include <mutex>

src/citra_qt/debugger/callstack.h

@@ -2,6 +2,8 @@
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 
+#pragma once
+
 #include <QDockWidget>
 #include "ui_callstack.h"
 

src/citra_qt/debugger/ramview.h

@@ -2,6 +2,8 @@
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 
+#pragma once
+
 #include "qhexedit.h"
 
 class GRamView : public QHexEdit {

src/citra_qt/debugger/registers.h

@@ -2,6 +2,8 @@
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 
+#pragma once
+
 #include <QDockWidget>
 #include "ui_registers.h"
 

src/citra_qt/debugger/wait_tree.h

@@ -2,6 +2,8 @@
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 
+#pragma once
+
 #include <boost/container/flat_set.hpp>
 
 #include <QAbstractItemModel>