Gui: Fix header uniformity, whitespace, and doxygen fixes

src/Gui/SoTextLabel.cpp

@@ -205,7 +205,7 @@ void SoTextLabel::GLRender(SoGLRenderAction *action)
         }
 #else
         // Unfortunately, the required size (in pixels) is stored in a non-accessible way
-        // in the subclass SoText2. Thus, we try to get a satisfactory solution with Qt 
+        // in the subclass SoText2. Thus, we try to get a satisfactory solution with Qt
         // methods.
         // The font name is of the form "family:style". If 'style' is given it can be
         // 'Bold', 'Italic' or 'Bold Italic'.
@@ -282,7 +282,7 @@ void SoTextLabel::GLRender(SoGLRenderAction *action)
         glPopClientAttrib();
         glPopAttrib();
         state->pop();
-          
+
         glPixelStorei(GL_UNPACK_ALIGNMENT,4);
         // Pop old GL matrix state.
         glMatrixMode(GL_PROJECTION);