At start of method `b` is already checked for null. https://github.com/openjdk/jdk/blob/178b962e01cc6c150442bf41dc6bd199caff0042/src/java.base/share/classes/java/io/LineNumberInputStream.java#L129-L131
------------- Commit messages: - [PATCH] Remove redundant null check in LineNumberInputStream.read Changes: https://git.openjdk.java.net/jdk/pull/7409/files Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=7409&range=00 Issue: https://bugs.openjdk.java.net/browse/JDK-8281728 Stats: 4 lines in 1 file changed: 0 ins; 2 del; 2 mod Patch: https://git.openjdk.java.net/jdk/pull/7409.diff Fetch: git fetch https://git.openjdk.java.net/jdk pull/7409/head:pull/7409 PR: https://git.openjdk.java.net/jdk/pull/7409
