use uint8_t for mrb_bool instead of unsigned int; close #1222

include/mruby/proc.h

@@ -40,9 +40,9 @@ struct RProc {
 #define MRB_ASPEC_BLOCK(a)        ((a) & 1)
 
 #define MRB_PROC_CFUNC 128
-#define MRB_PROC_CFUNC_P(p) ((p)->flags & MRB_PROC_CFUNC)
+#define MRB_PROC_CFUNC_P(p) (((p)->flags & MRB_PROC_CFUNC) != 0)
 #define MRB_PROC_STRICT 256
-#define MRB_PROC_STRICT_P(p) ((p)->flags & MRB_PROC_STRICT)
+#define MRB_PROC_STRICT_P(p) (((p)->flags & MRB_PROC_STRICT) != 0)
 
 #define mrb_proc_ptr(v)    ((struct RProc*)((v).value.p))
 

include/mruby/value.h

@@ -7,7 +7,7 @@
 #ifndef MRUBY_VALUE_H
 #define MRUBY_VALUE_H
 
-typedef unsigned int mrb_bool;
+typedef uint8_t mrb_bool;
 
 #ifndef MRB_NAN_BOXING