For the font in the URL bar. Can try to send upstream.

diff --git a/gfx/cairo/cairo/src/cairo-xlib-surface.c b/gfx/cairo/cairo/src/cairo-xlib-surface.c

--- a/gfx/cairo/cairo/src/cairo-xlib-surface.c

+++ b/gfx/cairo/cairo/src/cairo-xlib-surface.c

@@ -1310,7 +1310,11 @@

int a, r, g, b;

if (image_masks.bpp == 1)

+#ifdef WORDS_BIGENDIAN

+ in_pixel = !! (((uint8_t*)row)[x/8] & (1 << (7 - (x & 7))));

+#else

in_pixel = !! (((uint8_t*)row)[x/8] & (1 << (x & 7)));

+#endif

else if (image_masks.bpp <= 8)

in_pixel = ((uint8_t*)row)[x];

else if (image_masks.bpp <= 16)