Fixed incorrect number of history entries

src/asm/CanSkipReturn.go

@@ -0,0 +1,16 @@
+package asm
+
+// CanSkipReturn returns true if the return operation can be skipped.
+func (a *Assembler) CanSkipReturn() bool {
+	if len(a.Instructions) == 0 {
+		return false
+	}
+
+	lastMnemonic := a.Instructions[len(a.Instructions)-1].Mnemonic
+
+	if lastMnemonic == RETURN || lastMnemonic == JUMP {
+		return true
+	}
+
+	return false
+}