Fix template memory leak when debugger is running (#4572)

JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com

tests/debugger/do_next.cmd

@@ -1,3 +1,8 @@
 next
 next
+n
+n
+next
+n
+next
 c

tests/debugger/do_next.expected

@@ -2,8 +2,19 @@ Connecting to: localhost:5001
 Stopped at tests/debugger/do_next.js:15
 (jerry-debugger) next
 out: next test
-Stopped at tests/debugger/do_next.js:17
+Stopped at tests/debugger/do_next.js:28
 (jerry-debugger) next
-out: var cat
-Stopped at tests/debugger/do_next.js:18
+out: Func
+Stopped at tests/debugger/do_next.js:30
+(jerry-debugger) n
+Stopped at tests/debugger/do_next.js:33
+(jerry-debugger) n
+out: Func
+Stopped at tests/debugger/do_next.js:35
+(jerry-debugger) next
+Stopped at tests/debugger/do_next.js:39
+(jerry-debugger) n
+Stopped at tests/debugger/do_next.js:40
+(jerry-debugger) next
+Stopped at tests/debugger/do_next.js:42
 (jerry-debugger) c

tests/debugger/do_next.js

@@ -14,15 +14,29 @@
 
 print("next test");
 
-print ("var cat");
-var cat = 'cat';
-
 function test()
 {
   function f()
   {
     return 0;
   }
+
+  print("Func");
+  return f;
 }
 
-test();
+var f = test(),
+    g,
+    h = f();
+
+{
+  let a = test(),
+      b,
+      c = a();
+}
+
+
+eval("(function () {} `a`)")
+gc();
+
+f();