[gcalctool] Use mi for mile suffix, not m (used for meters)

[Robert Ancell <rancell src gnome org>]

commit 2aa88246d1460cf5a27b2e4a1299d218dabb6df4
Author: Robert Ancell <robert ancell gmail com>
Date:   Fri Mar 12 16:51:05 2010 +1100

    Use mi for mile suffix, not m (used for meters)

 src/display.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/display.c b/src/display.c
index 00253c6..35c228f 100644
--- a/src/display.c
+++ b/src/display.c
@@ -821,7 +821,7 @@ convert(const MPNumber *x, const char *x_units, const char *z_units, MPNumber *z
         {"nm",                   "1852000"},
         {"mile",                    "1609.344"},
         {"miles",                   "1609.344"},
-        {"m",                       "1609.344"},
+        {"mi",                      "1609.344"},
         {"kilometer",               "1000"},
         {"kilometers",              "1000"},
         {"km",                      "1000"},