MDL-60301 libraries: PHP7.2 compatibility fix

mod/assign/feedback/editpdf/fpdi/fpdi.php

@@ -571,7 +571,7 @@ class FPDI extends FPDF_TPL
 
                 reset ($value[1]);
 
-                while (list($k, $v) = each($value[1])) {
+                foreach ($value[1] as $k => $v) {
                     $this->_straightOut($k . ' ');
                     $this->_writeValue($v);
                 }

mod/assign/feedback/editpdf/fpdi/readme_moodle.txt

@@ -22,8 +22,9 @@ Installation
 2017/10/03
 ----------
 1/ Updated to 1.6.2
-2/ Cherry-picked changes in MDL-55848
+2/ Cherry-picked changes in MDL-55848.
 3/ Renamed 'TCPDF' to 'pdf' as stated above.
+4/ Applied php7.2 compatibility fix, remove this if it is fixed in next major release (2.0) (MDL-60301).
 
 Updated by Ankit Agarwal<[email protected]> (MDL-60301)