A minor negation in GetDelay to make it more readable #1419

Author: iPazooki

src/Moq/ReturnsExtensions.cs

@@ -339,7 +339,7 @@ static TimeSpan GetDelay(TimeSpan minDelay, TimeSpan maxDelay, Random random)
 
         static TimeSpan GetDelay(TimeSpan minDelay, TimeSpan maxDelay, Random random)
         {
-            if (!(minDelay < maxDelay))
+            if (minDelay >= maxDelay)
                 throw new ArgumentException(Resources.MinDelayMustBeLessThanMaxDelay);
 
             var min = (int)minDelay.Ticks;