[libchamplain] Don't use unicode characters in sources

[Jiří Techet <jiritechet src gnome org>]

commit 74b123f3807b619465599e5b79b3b06b376ca60d
Author: JiÅ?í Techet <techet gmail com>
Date:   Sun Aug 1 21:26:47 2010 +0200

    Don't use unicode characters in sources
    
    Signed-off-by: JiÅ?í Techet <techet gmail com>

 champlain/champlain-map-source.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/champlain/champlain-map-source.c b/champlain/champlain-map-source.c
index 42ef049..e98dce2 100644
--- a/champlain/champlain-map-source.c
+++ b/champlain/champlain-map-source.c
@@ -698,7 +698,7 @@ champlain_map_source_get_meters_per_pixel (ChamplainMapSource *map_source,
   /* Width is in pixels. (1 px)
      m/px = radius_at_latitude / width_in_pixels
      k = radius of earth = 6 378.1 km
-     radius_at_latitude = 2Ï? * k * sin (Ï?/2-θ)
+     radius_at_latitude = 2pi * k * sin (pi/2-theta)
   */
 
   gdouble tile_size = champlain_map_source_get_tile_size (map_source);