Rename some include guards (#7924)

---------

Co-authored-by: Sotonye Atemie <sakertooth@gmail.com>

include/FileRevealer.h

@@ -22,8 +22,8 @@
  *
  */
 
-#ifndef LMMS_FILE_REVEALER_H
-#define LMMS_FILE_REVEALER_H
+#ifndef LMMS_GUI_FILE_REVEALER_H
+#define LMMS_GUI_FILE_REVEALER_H
 
 #include <QFileInfo>
 
@@ -74,4 +74,5 @@ protected:
 };
 
 } // namespace lmms::gui
-#endif // LMMS_FILE_REVEALER_H
+
+#endif // LMMS_GUI_FILE_REVEALER_H

include/FontHelper.h

@@ -22,8 +22,8 @@
  *
  */
 
-#ifndef LMMS_FONT_HELPER_H
-#define LMMS_FONT_HELPER_H
+#ifndef LMMS_GUI_FONT_HELPER_H
+#define LMMS_GUI_FONT_HELPER_H
 
 #include <QApplication>
 #include <QFont>
@@ -44,4 +44,4 @@ inline QFont adjustedToPixelSize(QFont font, int size)
 
 } // namespace lmms::gui
 
-#endif // LMMS_FONT_HELPER_H
+#endif // LMMS_GUI_FONT_HELPER_H

include/SimpleTextFloat.h

@@ -23,8 +23,8 @@
 */
 
 
-#ifndef SIMPLE_TEXT_FLOAT_H
-#define SIMPLE_TEXT_FLOAT_H
+#ifndef LMMS_GUI_SIMPLE_TEXT_FLOAT_H
+#define LMMS_GUI_SIMPLE_TEXT_FLOAT_H
 
 #include <QWidget>
 
@@ -64,4 +64,4 @@ private:
 
 } // namespace lmms::gui
 
-#endif
+#endif // LMMS_GUI_SIMPLE_TEXT_FLOAT_H