[almanah] core: Remove an implicit dependency on libm

[Philip Withnall <pwithnall src gnome org>]

commit 2041caae063a7f445ca844722a3dc515a22a39f6
Author: Philip Withnall <philip tecnocode co uk>
Date:   Mon Nov 26 23:37:20 2012 +0000

    core: Remove an implicit dependency on libm
    
    We donât need to use floor() here, since C always truncates anyway,
    and thatâs equivalent to flooring if the dividend and divisor are
    positive.

 src/main-window.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/main-window.c b/src/main-window.c
index cd73cb2..fb931e1 100644
--- a/src/main-window.c
+++ b/src/main-window.c
@@ -1214,7 +1214,7 @@ get_icon_margin (void)
 
   gtk_icon_size_lookup (GTK_ICON_SIZE_MENU, &menu_size, NULL);
   gtk_icon_size_lookup (GTK_ICON_SIZE_LARGE_TOOLBAR, &toolbar_size, NULL);
-  return (gint) floor ((toolbar_size - menu_size) / 2.0);
+  return (gint) ((toolbar_size - menu_size) / 2);
 }
 
 static void