VOID_Tools: Stop a warning when compiling in DEBUG.
VOID_Tools: Stop a warning when compiling in DEBUG.

--- a/VOID_Tools.cs
+++ b/VOID_Tools.cs
@@ -335,7 +335,7 @@
 						func(id);
 					}
 					#if DEBUG
-					catch (ArgumentException ex)
+					catch (ArgumentException)
 					#else
 					catch (ArgumentException)
 					#endif