[flori/json] Fix parser bug for empty string allocation
When HAVE_RB_ENC_INTERNED_STR is enabled it is possible to pass through a null pointer to rb_enc_interned_str resulting in a segfault
HAVE_RB_ENC_INTERNED_STR
rb_enc_interned_str
Fixes #495
https://github.com/flori/json/commit/b59368a8c2
[flori/json] Fix parser bug for empty string allocation
When
HAVE_RB_ENC_INTERNED_STRis enabled it is possible topass through a null pointer to
rb_enc_interned_strresultingin a segfault
Fixes #495
https://github.com/flori/json/commit/b59368a8c2