Update simpleminer.cpp

1. Modified connection timeout from 1 second to 10 seconds
2. Modified behavior to retry instead of exiting when the miner fails to get a new job

src/miner/simpleminer.cpp

@@ -109,7 +109,7 @@ namespace mining
       if(!m_http_client.is_connected())
       {
         LOG_PRINT_L0("Connecting " << m_pool_ip << ":" << m_pool_port << "....");
-        if(!m_http_client.connect(m_pool_ip, m_pool_port, 1000))
+        if(!m_http_client.connect(m_pool_ip, m_pool_port, 10000))
         {
           LOG_PRINT_L0("Failed to connect " << m_pool_ip << ":" << m_pool_port << ", sleep....");
           epee::misc_utils::sleep_no_w(1000);
@@ -198,7 +198,7 @@ namespace mining
         LOG_PRINT_L0("Can't get new job! Disconnect and sleep....");
         m_http_client.disconnect();
         epee::misc_utils::sleep_no_w(1000);
-        break;
+        continue;
       }
       if (getjob_response.blob.empty() && getjob_response.target.empty() && getjob_response.job_id.empty())
       {