un-confuse lupdate: use #if 0 consistently

it's no good idea to #if 0 the opening brace but comment out the closing
one.

Change-Id: I6f9ca8f14f0dc82fb22df85de547564336ed0476
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>
Reviewed-by: Gunnar Sletta <gunnar.sletta@digia.com>

src/gui/opengl/qopengltextureglyphcache.cpp

@@ -372,7 +372,9 @@ void QOpenGLTextureGlyphCache::fillTexture(const Coord &c, glyph_t glyph, QFixed
         } else {
 #endif
             glTexSubImage2D(GL_TEXTURE_2D, 0, c.x, c.y, maskWidth, maskHeight, GL_ALPHA, GL_UNSIGNED_BYTE, mask.bits());
-//        }
+#if 0
+        }
+#endif
     }
 }