Fix tcl operator example crashing when run

The example was accessing deleted memory and so sometimes crashed.

Examples/tcl/operator/runme.tcl

@@ -9,11 +9,9 @@ puts "a   = $a [$a str]"
 puts "b   = $b [$b str]"
 
 set c [$a + $b]
-Complex -this $c
 puts "c   = $c [$c str]"
 
 set d [$a * $b]
-Complex -this $d
 puts "a*b  = [$d str]"
 
 # Alternative calling convention
@@ -21,7 +19,6 @@ set e [Complex_- $a $c]
 puts "a-c  = [Complex_str $e]"
 
 set f [new_ComplexCopy $e]
-Complex -this $f
 puts "f    = [$f str]"
 
 # Call assignment operator