MAC address not populating on Juniper EX switch

[DaveNet4300]

Describe the bug
A clear and concise description of what the bug is.
MAC addresses are not populating for Juniper EX switch using get_JEX_switch_Ports may be due to this errors loged.

To Reproduce
Steps to reproduce the behavior:

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

CMDPHP PHP ERROR NOTICE Backtrace: (/plugins/mactrack/mactrack_scanner.php[168]:get_JEX_switch_ports(), /plugins/mactrack/lib/mactrack_juniper.php[100]:CactiErrorHandler())
ERROR PHP NOTICE in Plugin 'mactrack': Undefined index: in file: /usr/share/cacti/plugins/mactrack/lib/mactrack_juniper.php on line: 100
CMDPHP PHP ERROR NOTICE Backtrace: (/plugins/mactrack/mactrack_scanner.php[168]:get_JEX_switch_ports(), /plugins/mactrack/lib/mactrack_juniper.php[99]:CactiErrorHandler())
ERROR PHP NOTICE in Plugin 'mactrack': Undefined index: in file: /usr/share/cacti/plugins/mactrack/lib/mactrack_juniper.php on line: 99
CMDPHP PHP ERROR NOTICE Backtrace: (/plugins/mactrack/mactrack_scanner.php[168]:get_JEX_switch_ports(), /plugins/mactrack/lib/mactrack_juniper.php[98]:CactiErrorHandler())
ERROR PHP NOTICE in Plugin 'mactrack': Undefined offset: 591 in file: /usr/share/cacti/plugins/mactrack/lib/mactrack_juniper.php on line: 98
CMDPHP PHP ERROR NOTICE Backtrace: (/plugins/mactrack/mactrack_scanner.php[168]:get_JEX_switch_ports(), /plugins/mactrack/lib/mactrack_juniper.php[100]:CactiErrorHandler())
ERROR PHP NOTICE in Plugin 'mactrack': Undefined index: in file: /usr/share/cacti/plugins/mactrack/lib/mactrack_juniper.php on line: 100

Expected behavior
A clear and concise description of what you expected to happen.
Mac addresses populated in tab DeviceTracking->Devices or DeviceTracking->MAC address
Screenshots
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Plugin (please complete the following information):

• Version: 4.2
• Source: github
• Identifer:

Desktop (please complete the following information):

• OS: Centos 8
• Browser Edge, Chrome
• Version Version 87.0.664.75, 87.0.4280.141

Smartphone (please complete the following information):

• Device: NA
• OS: NA
• Browser NA
• Version NA

Additional context
Add any other context about the problem here.
Thank you

[DaveNet4300]

Line of code based on the error message. Forgot to include in original issue.
mactrack_debug("Vlan assembly complete.");

if (sizeof($active_vlans) > 0) {
	$i = 0;
	/* get the port status information */
	//$port_results = get_base_dot1dTpFdbEntry_ports($site, $device, $ifInterfaces, "", "", FALSE);
	$mac_results  = xform_stripped_oid ( ".1.3.6.1.2.1.17.7.1.2.2.1.2", $device );
	$port_results = xform_stripped_oid ( ".1.3.6.1.2.1.17.1.4.1.2", $device );


	$i = 0;
	$j = 0;
	$port_array = array();
	foreach($mac_results as $num => $mac_result) {
		if ( $mac_result != 0 ) {
			$Xvlanid = substr ( $num, 0, strpos ( $num, "." ) );
			$Xmac    = mach ( substr ( $num, strpos ( $num, ".") + 1 ) );

			$ifIndex = $port_results[$mac_result];   -->Line 98
			$ifType = $ifInterfaces[$ifIndex]["ifType"]; ---> Line 99
			$ifName = $ifInterfaces[$ifIndex]["ifName"];   ---> Line 100
			$portName = $ifName;
			$portTrunkStatus = @$ifInterfaces[$ifIndex]["trunkPortState"];

[TheWitness]

Can you create a pull request for this change please?

[xmacan]

I think it is fixed via #206