Update getBalance calls

Author: lnbc1QWFyb24

src/modules/check/accounts.ts

@@ -51,11 +51,13 @@ function accountSelect(): WalletCheckModule | never {
           <select id="account-select" onchange="window.accountSelect()" style="padding: 0.5rem;">
             ${accountsAndBalances.map(
               (account: { balance: string; address: string }) =>
-                `<option value="${account.address}">${
-                  account.address
-                } --- ${new BigNumber(account.balance)
-                  .div('1000000000000000000')
-                  .toFixed(3)} ETH</option>`
+                `<option value="${account.address}">${account.address} --- ${
+                  account.balance != null
+                    ? new BigNumber(account.balance)
+                        .div('1000000000000000000')
+                        .toFixed(3)
+                    : '0'
+                } ETH</option>`
             )}
           </select><button style="background: transparent; margin: 0 0.25rem; padding: 0.25rem 0.5rem; border-radius: 40px; cursor: pointer; color: inherit; border-color: inherit; border-width: 1px;" onclick="window.loadMoreAccounts()">Load More</button>
         `,

src/modules/select/wallets/ledger.ts

@@ -238,7 +238,13 @@ async function ledgerProvider(options: {
         },
         (e: any, res: any) => {
           e && reject(e)
-          resolve(res && res.result && new BigNumber(res.result).toString(10))
+          const result = res && res.result
+
+          if (result != null) {
+            resolve(new BigNumber(result).toString(10))
+          } else {
+            resolve(null)
+          }
         }
       )
     })

src/modules/select/wallets/trezor.ts

@@ -256,7 +256,13 @@ async function trezorProvider(options: {
         },
         (e: any, res: any) => {
           e && reject(e)
-          resolve(res && res.result && new BigNumber(res.result).toString(10))
+          const result = res && res.result
+
+          if (result != null) {
+            resolve(new BigNumber(result).toString(10))
+          } else {
+            resolve(null)
+          }
         }
       )
     })