Fix the friendly segfault (it didnt do anything lol)

src/Interpreter.cpp

@@ -341,9 +341,14 @@ optional<Token> Interpreter::interpret(vector<Token> tokenList, bool isFunction)
         }
         // Execute the instruction
         log.debug("Length of line is " + to_string(lengthOfLine));
+        if (isFunction) {
+            optional<Token> returnTokenOptional = executeCode(currentInstruction, true);
+            if (returnTokenOptional.has_value());
+        } 
         executeCode(currentInstruction, isFunction);
         lengthOfLine = 0;
     }
+    return {};
 }
 
 optional<Token> Interpreter::executeCode(vector<Token> tokens, bool isFunction) {