valgrind memory dump using PHP readfile()

==19571== Conditional jump or move depends on uninitialised value(s)
==19571==    at 0xE4EDDB5: zm_deactivate_vld (vld.c:168)
==19571==    by 0x816D5F: zend_deactivate_modules (zend_API.c:2325)
==19571==    by 0x7A16D7: php_request_shutdown (main.c:1755)
==19571==    by 0x8C8D44: do_cli (php_cli.c:1169)
==19571==    by 0x43D313: main (php_cli.c:1356)
==19571==
==19571==
==19571== HEAP SUMMARY:
==19571==     in use at exit: 79,562 bytes in 2,498 blocks
==19571==   total heap usage: 36,521 allocs, 34,023 frees, 4,299,029 bytes allocated
==19571==
==19571== 6 bytes in 1 blocks are definitely lost in loss record 1 of 95
==19571==    at 0x4C28F9F: malloc (vg_replace_malloc.c:236)
==19571==    by 0x93B8091: strdup (strdup.c:43)
==19571==    by 0x59E6FC: zm_startup_intl (php_intl.c:661)
==19571==    by 0x8112B1: zend_startup_module_ex (zend_API.c:1653)
==19571==    by 0x81DC69: zend_hash_apply (zend_hash.c:716)
==19571==    by 0x8153BF: zend_startup_modules (zend_API.c:1780)
==19571==    by 0x7A2242: php_module_startup (main.c:2191)
==19571==    by 0x8C88BC: php_cli_startup (php_cli.c:414)
==19571==    by 0x43CF56: main (php_cli.c:1336)
==19571==
==19571== 16 bytes in 1 blocks are definitely lost in loss record 6 of 95
==19571==    at 0x4C28F9F: malloc (vg_replace_malloc.c:236)
==19571==    by 0x101CC3D8: ???
==19571==    by 0x101CC415: ???
==19571==    by 0x101CC207: ???
==19571==    by 0x101CDC22: ???
==19571==    by 0xF1C1EB3: ???
==19571==    by 0xF1C248C: ???
==19571==    by 0xF1BE334: ???
==19571==    by 0xEB90779: ???
==19571==    by 0x8112B1: zend_startup_module_ex (zend_API.c:1653)
==19571==    by 0x81DC69: zend_hash_apply (zend_hash.c:716)
==19571==    by 0x8153BF: zend_startup_modules (zend_API.c:1780)
==19571==
==19571== 104 (16 direct, 88 indirect) bytes in 1 blocks are definitely lost in loss record 34 of 95
==19571==    at 0x4C28F9F: malloc (vg_replace_malloc.c:236)
==19571==    by 0x101CFDFD: ???
==19571==    by 0x101CC584: ???
==19571==    by 0x101CDB48: ???
==19571==    by 0x101CC311: ???
==19571==    by 0xF1C1EB3: ???
==19571==    by 0xF1C248C: ???
==19571==    by 0xF1BE334: ???
==19571==    by 0xEB90779: ???
==19571==    by 0x8112B1: zend_startup_module_ex (zend_API.c:1653)
==19571==    by 0x81DC69: zend_hash_apply (zend_hash.c:716)
==19571==    by 0x8153BF: zend_startup_modules (zend_API.c:1780)
==19571==
==19571== 176 (88 direct, 88 indirect) bytes in 1 blocks are definitely lost in loss record 42 of 95
==19571==    at 0x4C28F9F: malloc (vg_replace_malloc.c:236)
==19571==    by 0x101CC3D8: ???
==19571==    by 0x101CC415: ???
==19571==    by 0x101CEAEB: ???
==19571==    by 0x101CEE73: ???
==19571==    by 0x101CC305: ???
==19571==    by 0xF1C1EB3: ???
==19571==    by 0xF1C248C: ???
==19571==    by 0xF1BE334: ???
==19571==    by 0xEB90779: ???
==19571==    by 0x8112B1: zend_startup_module_ex (zend_API.c:1653)
==19571==    by 0x81DC69: zend_hash_apply (zend_hash.c:716)
==19571==
==19571== LEAK SUMMARY:
==19571==    definitely lost: 126 bytes in 4 blocks
==19571==    indirectly lost: 176 bytes in 5 blocks
==19571==      possibly lost: 0 bytes in 0 blocks
==19571==    still reachable: 79,260 bytes in 2,489 blocks
==19571==         suppressed: 0 bytes in 0 blocks
==19571== Reachable blocks (those to which a pointer was found) are not shown.
==19571== To see them, rerun with: --leak-check=full --show-reachable=yes
==19571==
==19571== For counts of detected and suppressed errors, rerun with: -v
==19571== Use --track-origins=yes to see where uninitialised values come from
==19571== ERROR SUMMARY: 6 errors from 6 contexts (suppressed: 14 from 6)