Check the size argument passed to strncat for common erroneous patterns. There are currently no clang-analyzer-unix.cstring.BadSizeArg warnings in mozilla-central!
https://clang-analyzer.llvm.org/available_checks.html
MozReview-Commit-ID: DUI3ZNIBoLQ
--HG--
extra : source : 8dafc73215cddd2737b4d8dbcb926521736d98c2
extra : histedit_source : ed27a98e47c01c9951c03eb2129ed4997f3cf624