Merge pull request #3019 from cremno/fix-mrb_disable_stdio-typos

fix MRB_DISABLE_STDIO typos

include/mrbconf.h

@@ -85,7 +85,7 @@
 
 /* define MRB_DISABLE_XXXX from DISABLE_XXX (for compatibility) */
 #ifdef DISABLE_STDIO
-#define MRB_DIABLE_STDIO
+#define MRB_DISABLE_STDIO
 #endif
 
 /* define MRB_ENABLE_XXXX from ENABLE_XXX (for compatibility) */

include/mruby/compile.h

@@ -112,7 +112,7 @@ struct mrb_parser_state {
   struct mrb_pool *pool;
   mrb_ast_node *cells;
   const char *s, *send;
-#ifndef MRB_DIABLE_STDIO
+#ifndef MRB_DISABLE_STDIO
   FILE *f;
 #endif
   mrbc_context *cxt;