OSV-2020-1065 Use-of-uninitialized-value in xsltNumberFormatInsertNumbers

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=14471 Crash type: Use-of-uninitialized-value Crash state: xsltNumberFormatInsertNumbers xsltNumberFormat xsltNumber...