Description:
------------
The patch to bug #53848 has broken fgetcsv when it reads "empty" fields and an 
enclosure is used. Before this patch, the actual result was the same as the 
expected result.

Test script:
---------------
print_r(str_getcsv("1\t2\t3", "\t", "'"));    // This works
print_r(str_getcsv("1\t\t3", "\t", ""));      // This works
print_r(str_getcsv("'1'\t\t'3'", "\t", "'")); // This one is broken (used to work)

Expected result:
----------------
Array
(
    [0] => 1
    [1] => 2
    [2] => 3
)
Array
(
    [0] => 1
    [1] => 
    [2] => 3
)
Array
(
    [0] => 1
    [1] => 
    [2] => 3
)

Actual result:
--------------
Array
(
    [0] => 1
    [1] => 2
    [2] => 3
    [3] => 3
)
Array
(
    [0] => 1
    [1] => 
    [2] => 3
)
Array
(
    [0] => 1
    [1] => 3
)