Change the type of Undecorated to unique_ptr<char[]> since we're looking at a null terminated string and not a single character.

Fixes an error in tcmalloc sized delete checking.

llvm-svn: 306780

llvm/tools/llvm-nm/llvm-nm.cpp

@@ -672,7 +672,7 @@ static Optional<std::string> demangle(StringRef Name, bool StripUnderscore) {
     return None;
 
   int Status;
-  std::unique_ptr<char> Undecorated(
+  std::unique_ptr<char[]> Undecorated(
       itaniumDemangle(Name.str().c_str(), nullptr, nullptr, &Status));
   if (Status != 0)
     return None;