call julia_init before entering --lisp prompt

this fixes a crash when lisp calls julia runtime code that tries to
establish an exception handler. it also allows expanding Base macros
from the lisp prompt, which could be very useful.

ui/repl.c

@@ -239,12 +239,17 @@ int wmain(int argc, wchar_t *argv[], wchar_t *envp[])
  }
 #endif
  libsupport_init();
- if (argc >= 2 && strcmp((char*)argv[1],"--lisp") == 0) {
- jl_lisp_prompt();
- return 0;
+ int lisp_prompt = (argc >= 2 && strcmp((char*)argv[1],"--lisp") == 0);
+ if (lisp_prompt) {
+ memmove(&argv[1], &argv[2], (argc-2)*sizeof(void*));
+ argc--;
  }
  jl_parse_opts(&argc, (char***)&argv);
  julia_init(jl_options.image_file_specified ? JL_IMAGE_CWD : JL_IMAGE_JULIA_HOME);
+ if (lisp_prompt) {
+ jl_lisp_prompt();
+ return 0;
+ }
  int ret = true_main(argc, (char**)argv);
  jl_atexit_hook(ret);
  return ret;