Fix fuzzer bugs

...nt_fuzzer_corpus/6f30de3096eb71f697885fdd9cbddd9ee6ce46c4

...nt_fuzzer_corpus/7f1530d4b702e68d043f89d9e63d314319dcd803

...nt_fuzzer_corpus/85a7e47ef707d3b31cad924ed6c697c3678ab569

...nt_fuzzer_corpus/911e2ea20b6c10431e48f70d9933987815926a9d

...nt_fuzzer_corpus/93ac93b7deabdfb4f86eb37a1e9f6669957d14a6

...nt_fuzzer_corpus/9eaf2ad607a943141c29f334b2c66c2e59e99980

...nt_fuzzer_corpus/a210d629c305b89a34b7ff3c41ae4566cd22186b

...nt_fuzzer_corpus/a29a547671badd3154789e1a02bdb87332fcd6a4

...nt_fuzzer_corpus/a5592f15d5424ab7e16a18e77027ab91c846d90a

...nt_fuzzer_corpus/a5cf80b996b2ba8c9580f8ecd22720c48de41044

...nt_fuzzer_corpus/b24c25c6d4b57a5f3d64a0adb205bf4f150c9138

...nt_fuzzer_corpus/beabbe93f1e9b2e56f729af30559ec03a00f53fa

...nt_fuzzer_corpus/cbe59c62c6d36c7307c438159327e320cd2fcf57

...nt_fuzzer_corpus/ce1c326f3b0147841550ce3b5126390764bae8e8

...nt_fuzzer_corpus/d21ca2b01baa21a666257d1a1e0275587eeb565d

...nt_fuzzer_corpus/d2f71a800612876010558ce804c9a72ad0a1b9fc

...nt_fuzzer_corpus/d637cc9387087de633b9db535d19f64795c43be1

...nt_fuzzer_corpus/dd5ac34f5b220970447b2733848de78570c47883

...nt_fuzzer_corpus/f2a6bb4e0137541e2b140b976764377d07d822d6