Fix some style issues in the python debugger client. (#3603)

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

jerry-debugger/jerry_client.py

@@ -133,6 +133,8 @@ class DebuggerPrompt(Cmd):
             line_num = src_check_args(args)
             if line_num >= 0:
                 write(self.debugger.print_source(line_num, 0))
+        else:
+            write(self.debugger.print_source(0, 0))
     do_source = do_src
 
     def do_scroll(self, _):
@@ -150,7 +152,7 @@ class DebuggerPrompt(Cmd):
 
     def do_continue(self, _):
         """ Continue execution """
-        self.debugger.get_continue()
+        self.debugger.do_continue()
         self.stop = True
         if not self.debugger.non_interactive:
             print("Press enter to stop JavaScript execution.")