shortcut common cases in hot code paths

src/SMAPI/Framework/Deprecations/DeprecationManager.cs

@@ -95,6 +95,9 @@ namespace StardewModdingAPI.Framework.Deprecations
         /// <summary>Print any queued messages.</summary>
         public void PrintQueued()
         {
+            if (!this.QueuedWarnings.Any())
+                return;
+
             foreach (DeprecationWarning warning in this.QueuedWarnings.OrderBy(p => p.ModName).ThenBy(p => p.NounPhrase))
             {
                 // build message

src/SMAPI/Framework/SCore.cs

@@ -596,6 +596,7 @@ namespace StardewModdingAPI.Framework
                 /*********
                 ** Execute commands
                 *********/
+                if (this.ScreenCommandQueue.Value.Any())
                 {
                     var commandQueue = this.ScreenCommandQueue.Value;
                     foreach ((Command? command, string? name, string[]? args) in commandQueue)