Revert "Cleanup: Cleanup: style, use braces for GHOST (X11/SDL)"

This reverts commit 935c9ab0de.

Clang-tidy was making unrelated *fixes*.

intern/ghost/intern/GHOST_System.cpp

@@ -356,12 +356,10 @@ GHOST_TSuccess GHOST_System::createFullScreenWindow(GHOST_Window **window,
 {
   GHOST_GLSettings glSettings = {0};
 
-  if (stereoVisual) {
+  if (stereoVisual)
     glSettings.flags |= GHOST_glStereoVisual;
-  }
-  if (alphaBackground) {
+  if (alphaBackground)
     glSettings.flags |= GHOST_glAlphaBackground;
-  }
 
   /* note: don't use getCurrentDisplaySetting() because on X11 we may
    * be zoomed in and the desktop may be bigger then the viewport. */