Update vm.c

Author: AzliRynz

vm.c

@@ -113,9 +113,9 @@ bool is_falsey(Value value) {
 bool values_equal(Value a, Value b) {
     if (a.type != b.type) return false;
     switch (a.type) {
-        case VAL_BOOL:   return AS_BOOL(a) == AS_BOOL(b);
-        case VAL_NIL:    return true;
-        case VAL_NUMBER: return AS_NUMBER(a) == AS_NUMBER(b);
+        case BOOL_VAL:   return AS_BOOL(a) == AS_BOOL(b);
+        case NIL_VAL:    return true;
+        case NUMBER_VAL: return AS_NUMBER(a) == AS_NUMBER(b);
         default:         return false; // Unreachable
     }
 }