Expand corpus, fix crash

src/core/ext/transport/chttp2/transport/hpack_parser.c

...nt_fuzzer_corpus/07048654244e377ddf246e8cc18f71443035cd2b

...nt_fuzzer_corpus/0c30868720d5e1a19ff23c53740749c37a43540d

...nt_fuzzer_corpus/101305ccd08c7a8bd0c2913c37d3dd0d39d4bb64

...nt_fuzzer_corpus/1160214cdb23e8fc187078a8d6796656c1ade925

...nt_fuzzer_corpus/17b1758fc7cd69a00d140f113b1ac894023ff20b

...nt_fuzzer_corpus/1aee32faadffa3c2ec508e8fd30006423665488f

...nt_fuzzer_corpus/1ca51ab2fefef4f549c4a8e7f4910c6b5a4b4b1d

...nt_fuzzer_corpus/1dc86d0febe4adc5353230cea24b5f7cce829283

...nt_fuzzer_corpus/2166c7093c424a2136c4cb8b10d0b124047320d4

...nt_fuzzer_corpus/28ee8cae75efa07da9649933a9482d00643b5395

...nt_fuzzer_corpus/29be7d33920998bae7329d77d4c81989eae91647

...nt_fuzzer_corpus/361c6f4374443671f039fd9659577e4460178020

...nt_fuzzer_corpus/375c2462d6ae891222686f9519294811fa5de010

...nt_fuzzer_corpus/4b585eb75ebca2187c0aa5a6abe4c8125aa80127

...nt_fuzzer_corpus/534c900ade27c8f7fccb1f3b7e7703f77f13a8f5

...nt_fuzzer_corpus/5482dc4af170def9c183315efaa48f9c186926a1

...nt_fuzzer_corpus/5dc7b2086a39f56d8b9135f524d34a01fcabafd8

...nt_fuzzer_corpus/653ec14661c40ea25bdbab4a7cb9371c669d10d9

...nt_fuzzer_corpus/759a1e2e34cad14321a5e5790b1e6a783312fea1