[gn build] Port f329e3e

Author: llvmgnsyncbot

llvm/utils/gn/secondary/clang-tools-extra/clang-tidy/bugprone/BUILD.gn

@@ -58,6 +58,7 @@ static_library("bugprone") {
     "NotNullTerminatedResultCheck.cpp",
     "OptionalValueConversionCheck.cpp",
     "ParentVirtualCallCheck.cpp",
+    "PointerArithmeticOnPolymorphicObjectCheck.cpp",
     "PosixReturnCheck.cpp",
     "RedundantBranchConditionCheck.cpp",
     "ReservedIdentifierCheck.cpp",