efl_core_command_line: Fix resource leak

Small patch to fix a resource leak. Variable 'command' goes out of
scope here which causes a leak.

Fixes Coverity CID1399085

Reviewed-by: Stefan Schmidt <stefan@datenfreihafen.org>
Reviewed-by: Marcel Hollerbach <mail@marcel-hollerbach.de>
Differential Revision: https://phab.enlightenment.org/D8308

src/lib/ecore/efl_core_command_line.c

@@ -229,6 +229,7 @@ _efl_core_command_line_command_array_set(Eo *obj EINA_UNUSED, Efl_Core_Command_L
                   eina_stringshare_del(content);
                }
              eina_array_free(array);
+             eina_strbuf_free(command);
              return EINA_FALSE;
           }