Merge branch 'bug71354' into PHP-5.5.32

* bug71354:
  Fix bug #71354 - remove UMR when size is 0

Author: smalyshev

ext/phar/phar_object.c

@@ -4884,6 +4884,7 @@ PHP_METHOD(PharFileInfo, getContent)
 
 	phar_seek_efp(link, 0, SEEK_SET, 0, 0 TSRMLS_CC);
 	Z_TYPE_P(return_value) = IS_STRING;
+	Z_STRVAL_P(return_value) = NULL;
 	Z_STRLEN_P(return_value) = php_stream_copy_to_mem(fp, &(Z_STRVAL_P(return_value)), link->uncompressed_filesize, 0);
 
 	if (!Z_STRVAL_P(return_value)) {

ext/phar/tests/bug71354.phpt

@@ -0,0 +1,13 @@
+--TEST--
+Phar: bug #71354: Heap corruption in tar/zip/phar parser.
+--SKIPIF--
+<?php if (!extension_loaded("phar")) die("skip"); ?>
+--FILE--
+<?php
+$p = new PharData(__DIR__."/bug71354.tar");
+var_dump($p['aaaa']->getContent());
+?>
+DONE
+--EXPECT--
+string(0) ""
+DONE