Trim ending whitespaces on timespan pretty print

DeukBot4/Utilities/StringExtensions.cs

@@ -13,5 +13,20 @@ namespace DeukBot4.Utilities
             }
             return sb.ToString();
         }
+
+        public static StringBuilder TrimEnd(this StringBuilder sb)
+        {
+            if (sb == null || sb.Length == 0) return sb;
+
+            int i = sb.Length - 1;
+            for (; i >= 0; i--)
+                if (!char.IsWhiteSpace(sb[i]))
+                    break;
+
+            if (i < sb.Length - 1)
+                sb.Length = i + 1;
+
+            return sb;
+        }
     }
 }

DeukBot4/Utilities/TimespanHelper.cs

@@ -40,8 +40,10 @@ namespace DeukBot4.Utilities
                 sb.AppendFormat("{0} hour{1} ", span.Hours, span.Hours > 1 ? "s" : String.Empty);
             if (span.Minutes > 0)
                 sb.AppendFormat("{0} minute{1} ", span.Minutes, span.Minutes > 1 ? "s" : String.Empty);
+            sb.TrimEnd();
             return sb.ToString();
 
         }
+
     }
 }