Update pyexec.c (pycom#417)

Allow CTRL-D when using the Base VARIANT

Co-authored-by: @robert-hh

Author: Xykon

lib/utils/pyexec.c

@@ -491,13 +491,18 @@ int pyexec_friendly_repl(void) {
         } else if (ret == CHAR_CTRL_D) {
             // exit for a soft reset
             mp_hal_stdout_tx_str("\r\n");
+#if (VARIANT == PYBYTES)
             if (config_get_pybytes_autostart()) {
                 continue;
             }
             else {
                 vstr_clear(&line);
                 return PYEXEC_FORCED_EXIT;
             }
+#else
+            vstr_clear(&line);
+            return PYEXEC_FORCED_EXIT;
+#endif
         } else if (ret == CHAR_CTRL_E) {
             // paste mode
             mp_hal_stdout_tx_str("\r\npaste mode; Ctrl-C to cancel, Ctrl-D to finish\r\n=== ");