- Fixed broken Win32 build

- Removed warning about clobbered parameter in Bytecode/Reader


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30026 91177308-0d34-0410-b5e6-96231b3b80d8

lib/System/Win32/MappedFile.inc

@@ -55,6 +55,8 @@ bool MappedFile::initialize(std::string* ErrMsg) {
     return MakeErrMsg(ErrMsg, 
       std::string("Can't get size of file: ") + path_.toString());
   }
+
+  return false;
 }
 
 void MappedFile::terminate() {