Fix wrong free function

mrb_locale_free() should be used for the return value of
mrb_locale_from_utf8().

mrbgems/mruby-bin-mirb/tools/mirb/mirb.c

@@ -599,13 +599,13 @@ done:
         /* warning */
         char* msg = mrb_locale_from_utf8(parser->warn_buffer[0].message, -1);
         printf("line %d: %s\n", parser->warn_buffer[0].lineno, msg);
-        mrb_utf8_free(msg);
+        mrb_locale_free(msg);
       }
       if (0 < parser->nerr) {
         /* syntax error */
         char* msg = mrb_locale_from_utf8(parser->error_buffer[0].message, -1);
         printf("line %d: %s\n", parser->error_buffer[0].lineno, msg);
-        mrb_utf8_free(msg);
+        mrb_locale_free(msg);
       }
       else {
         /* generate bytecode */

mrbgems/mruby-io/src/file.c

@@ -310,7 +310,7 @@ mrb_file__gethome(mrb_state *mrb, mrb_value klass)
   }
   home = mrb_locale_from_utf8(home, -1);
   path = mrb_str_new_cstr(mrb, home);
-  mrb_utf8_free(home);
+  mrb_locale_free(home);
   return path;
 #else
   argc = mrb_get_argc(mrb);
@@ -327,7 +327,7 @@ mrb_file__gethome(mrb_state *mrb, mrb_value klass)
   }
   home = mrb_locale_from_utf8(home, -1);
   path = mrb_str_new_cstr(mrb, home);
-  mrb_utf8_free(home);
+  mrb_locale_free(home);
   return path;
 #endif
 }

mrbgems/mruby-io/src/io.c

@@ -780,7 +780,7 @@ reopen:
     mrb_str_modify(mrb, mrb_str_ptr(emsg));
     mrb_sys_fail(mrb, RSTRING_PTR(emsg));
   }
-  mrb_utf8_free(fname);
+  mrb_locale_free(fname);
 
   if (fd <= 2) {
     mrb_fd_cloexec(mrb, fd);