fix(@wallet): estimate gas fail when not enough fund

fixes #5267

src/app/modules/main/wallet_section/transactions/view.nim

@@ -110,7 +110,6 @@ QtObject:
 
   proc estimateGas*(self: View, from_addr: string, to: string, assetAddress: string, value: string, data: string): string {.slot.} =
     result = self.delegate.estimateGas(from_addr, to, assetAddress, value, data)
-    result = self.delegate.estimateGas(from_addr, to, assetAddress, value, data)
 
   proc transactionSent*(self: View, txResult: string) {.signal.}
 

src/app_service/service/transaction/service.nim

@@ -224,7 +224,6 @@ QtObject:
   ): string {.slot.} =
     var response: RpcResponse[JsonNode]
     # TODO make this async
-    try:
     if assetAddress != ZERO_ADDRESS and not assetAddress.isEmptyOrWhitespace:
       var tx = buildTokenTransaction(
         parseAddress(from_addr),
@@ -240,24 +239,28 @@ QtObject:
       let transfer = Transfer(to: parseAddress(to), value: conversion.eth2Wei(parseFloat(value), token.decimals))
       let transferproc = ERC20_procS.toTable["transfer"]
       var success: bool
+      try:
         let gas = transferproc.estimateGas(tx, transfer, success)
 
         let res = fromHex[int](gas)
-        result = $(%* { "result": res, "success": success })
-      else:
+        return $(%* { "result": res, "success": success })
+      except Exception as e:
+        error "Error estimating gas", msg = e.msg
+        return $(%* { "result": "-1", "success": false, "error": { "message": e.msg } })
+
     var tx = ens_utils.buildTransaction(
       parseAddress(from_addr),
       eth2Wei(parseFloat(value), 18),
       data = data
     )
     tx.to = parseAddress(to).some
+    try:
       response = eth.estimateGas(%*[%tx])
-
       let res = fromHex[int](response.result.getStr)
-        result = $(%* { "result": %res, "success": true })
     except Exception as e:
       error "Error estimating gas", msg = e.msg
-      result = $(%* { "result": "-1", "success": false, "error": { "message": e.msg } })
+      return $(%* { "result": "-1", "success": false })
+    
 
   proc transferEth*(
       self: Service,