FontEditor: Set all pixels when pasting a glyph

For an empty glyph (all pixels initially clear), this makes no
difference. However, if the glyph for the selected code point already
contains some set pixels, pasting used to "add" the set pixels, instead
of overwriting.

Userland/Applications/FontEditor/GlyphEditorWidget.cpp

@@ -107,8 +107,7 @@ void GlyphEditorWidget::paste_glyph()
     auto bitmap = font().raw_glyph(m_glyph).glyph_bitmap();
     for (int x = 0; x < min(bitmap.width(), buffer_width.value()); x++) {
         for (int y = 0; y < min(bitmap.height(), buffer_height.value()); y++) {
-            if (bits[x][y])
-                bitmap.set_bit_at(x, y, bits[x][y]);
+            bitmap.set_bit_at(x, y, bits[x][y]);
         }
     }