OSV-2018-459 Use-of-uninitialized-value in lex_white

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=5632 Crash type: Use-of-uninitialized-value Crash state: lexwhite pdflex pdfprocessstream...

OSV-2018-274 Use-of-uninitialized-value in pdf_lex

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=5600 Crash type: Use-of-uninitialized-value Crash state: pdflex pdfprocessstream pdfprocesscontents...