[SC64][SW] GDB socket fixes

sw/pc/sc64.py

@@ -624,15 +624,18 @@ class SC64:
             (self.__gdb_client, address) = gdb_socket.accept()
             client_address = f'{address[0]}:{address[1]}'
             print(f'[GDB]: New connection ({client_address})')
-            while (True):
             try:
+                connected = True
+                while (connected):
                     data = self.__gdb_client.recv(MAX_PACKET_SIZE)
-                    if (len(data) == 0):
-                        break
+                    if (data):
                         self.debug_send(self.__DebugDatatype.GDB, data)
+                    else:
+                        connected = False
             except:
+                pass
+            finally:
                 self.__gdb_client.close()
-                    break
                 print(f'[GDB]: Connection closed ({client_address})')
 
     def __handle_gdb_datatype(self, data: bytes) -> None: