OSV-2020-1476 Heap-buffer-overflow in read_uleb128

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=6402 Crash type: Heap-buffer-overflow READ 1 Crash state: readuleb128 dexparse dexload...

OSV-2020-855 Use-of-uninitialized-value in read_uleb128

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=6402 Crash type: Use-of-uninitialized-value Crash state: readuleb128 dexparse dexload...