[gn build] Port 299aa4d

Author: aeubanks

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

@@ -16,6 +16,7 @@ static_library("misc") {
   sources = [
     "DefinitionsInHeadersCheck.cpp",
     "MiscTidyModule.cpp",
+    "MisleadingIdentifier.cpp",
     "MisplacedConstCheck.cpp",
     "NewDeleteOverloadsCheck.cpp",
     "NoRecursionCheck.cpp",