Add missing clean sections

Author: Girgias

ext/standard/tests/file/file_get_contents_basic.phpt

@@ -29,6 +29,7 @@ echo "\n*** Done ***";
 $file_path = __DIR__;
 include($file_path."/file.inc");
 delete_files($file_path, 1);
+@unlink($file_path."/file_get_contents_basic1.tmp");
 ?>
 --EXPECT--
 *** Testing the basic functionality of the file_get_contents() function ***

ext/standard/tests/general_functions/proc_open-mb0.phpt

@@ -38,6 +38,10 @@ proc_close($p);
 
 echo $out;
 
+?>
+--CLEAN--
+<?php
+@unlink(__DIR__ . DIRECTORY_SEPARATOR . "proc_only_mb0.php");
 ?>
 --EXPECTF--
 array(4) {

ext/standard/tests/general_functions/proc_open-mb1.phpt

@@ -35,6 +35,10 @@ proc_close($p);
 
 echo $out;
 
+?>
+--CLEAN--
+<?php
+@unlink(__DIR__ . DIRECTORY_SEPARATOR . "proc_only_mb1.php");
 ?>
 --EXPECTF--
 array(4) {