terrarium: use hex instead of literal Unicode degrees character.

diff --git a/src/planetarium/terrain.scm b/src/planetarium/terrain.scm
index 3d766484c740449a5868521eecd83d817b97a377..95ee3afe8b1ef8a587a4894e47d20435fb95244e 100644 (file)
--- a/src/planetarium/terrain.scm
+++ b/src/planetarium/terrain.scm
@@ -249,10 +249,10 @@ Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
       "m  head: "(number->string
                  (flo:round->exact
                   (radians->degrees (glx-viewport-heading widget))) '(int))
-      "°  incl: "(number->string
+      "\xb0; incl: "(number->string
                  (flo:round->exact
                   (radians->degrees (glx-viewport-tilt widget))) '(int))
-      "°"))))
+      "\xb0;"))))
 
 (define (draw-sea-level widget)
   ;; A translucent blue plane at sea level.