Don't crash Lua when the translation attempt fails.

OpenRA.Game/Translation.cs

@@ -87,6 +87,8 @@ namespace OpenRA
 		}
 
 		public bool TryGetString(string key, out string value, IDictionary<string, object> arguments = null)
+		{
+			try
 			{
 				if (!HasMessage(key))
 				{
@@ -99,8 +101,6 @@ namespace OpenRA
 					foreach (var (k, v) in arguments)
 						fluentArguments.Add(k, v.ToFluentType());
 
-			try
-			{
 				var result = bundle.TryGetAttrMsg(key, fluentArguments, out var errors, out value);
 				foreach (var error in errors)
 					Log.Write("debug", $"Translation of {key}: {error}");
@@ -109,7 +109,8 @@ namespace OpenRA
 			}
 			catch (Exception e)
 			{
-				Log.Write("debug", $"Translation of {key}: {e}");
+				Log.Write("debug", $"Translation of {key} failed:");
+				Log.Write("debug", e);
 				value = null;
 				return false;
 			}