Fix error for lack of rmd160 in Electron v4

src/crypto.js

@@ -2,10 +2,17 @@
 Object.defineProperty(exports, "__esModule", { value: true });
 const createHash = require('create-hash');
 function ripemd160(buffer) {
+    try {
         return createHash('rmd160')
             .update(buffer)
             .digest();
     }
+    catch (err) {
+        return createHash('ripemd160')
+            .update(buffer)
+            .digest();
+    }
+}
 exports.ripemd160 = ripemd160;
 function sha1(buffer) {
     return createHash('sha1')

ts_src/crypto.ts

@@ -1,9 +1,15 @@
 const createHash = require('create-hash');
 
 export function ripemd160(buffer: Buffer): Buffer {
+  try {
     return createHash('rmd160')
       .update(buffer)
       .digest();
+  } catch (err) {
+    return createHash('ripemd160')
+      .update(buffer)
+      .digest();
+  }
 }
 
 export function sha1(buffer: Buffer): Buffer {