fix build errors

Author: laijonathan

bcrypt.js

@@ -87,10 +87,14 @@ module.exports.genSalt = function genSalt(rounds, minor, cb) {
 /// @param {String} salt the salt to use when hashing
 /// @return {String} hash
 module.exports.hashSync = function hashSync(data, salt) {
+
     if (data == null || salt == null) {
         throw new Error('data and salt arguments required');
     }
-
+    
+    if (salt === '') {
+	throw new Error('Salt cannot be empty');
+    }
     if (typeof data !== 'string' || (typeof salt !== 'string' && typeof salt !== 'number')) {
         throw new Error('data must be a string and salt must either be a salt string or a number of rounds');
     }

binding.gyp

@@ -38,10 +38,11 @@
             'GCC_SYMBOLS_PRIVATE_EXTERN': 'YES', # -fvisibility=hidden
           }
         }],
-        ['OS=="zos" and NODE_VERSION < 16',{
+        ['OS=="zos" and NODE_VERSION <= 16',{
             'cflags': [
               '-qascii',
             ],
+            'defines': ["NAPI_DISABLE_CPP_EXCEPTIONS"],
         }],
       ],
     },