SYNERGY-970 Synergy1. User is not able to connect to server using ipv… (#7005)

* SYNERGY-970 Synergy1. User is not able to connect to server using ipv6 without wrapping IP in square quotes
*Fix connection without brackets
*Fix config screen bug

* SYNERGY-970 Synergy1. User is not able to connect to server using ipv6 without wrapping IP in square quotes
*Update changelog

Co-authored-by: Andrii Batyiev <andrii-external@symless.com>

ChangeLog

@@ -15,6 +15,7 @@ Bug fixes:
 - #6993 Fix issues with prefences UI
 - #6992 UI issues and use cases
 - #7000 Additional UI tweaks
+- #7005 Fix User is not able to connect to server using ipv6 without wrapping IP in square quotes
 
 Enhancements:
 - #6954 Move language selection to advanced section

src/gui/src/MainWindow.cpp

@@ -799,7 +799,19 @@ bool MainWindow::clientArgs(QStringList& args, QString& app)
         }
 #endif
     }
-    args << m_pLineEditHostname->text() + ":" + QString::number(appConfig().port());
+
+    QString hostName = m_pLineEditHostname->text();
+    // if interface is IPv6 - ensure that ip is in square brackets
+    if (hostName.count(':') > 1) {
+        if(hostName[0] != '[') {
+            hostName.insert(0, '[');
+        }
+        if(hostName[hostName.size() - 1] != ']') {
+            hostName.push_back(']');
+        }
+    }
+
+    args << hostName + ":" + QString::number(appConfig().port());
     return true;
 }
 

src/lib/server/Config.cpp

@@ -137,9 +137,9 @@ Config::removeScreen(const String& name)
 			m_nameToCanonicalName.erase(iter++);
 		}
 		else {
-			++index;
+            ++iter;
 		}
-	}
+    }
 }
 
 void