Merge pull request #789 from UnePierre/typos

Typos in comments

c++/src/capnp/serialize.h

@@ -189,7 +189,7 @@ void writeMessage(kj::OutputStream& output, kj::ArrayPtr<const kj::ArrayPtr<cons
 // Specializations for reading from / writing to file descriptors.
 
 class StreamFdMessageReader: private kj::FdInputStream, public InputStreamMessageReader {
-  // A MessageReader that reads from a steam-based file descriptor.
+  // A MessageReader that reads from a stream-based file descriptor.
 
 public:
   StreamFdMessageReader(int fd, ReaderOptions options = ReaderOptions(),

c++/src/kj/debug.h

@@ -122,7 +122,7 @@ namespace kj {
 //   you to request this behavior with "##__VA_ARGS__".
 // - If __VA_ARGS__ is passed directly as an argument to another macro, it will be treated as a
 //   *single* argument rather than an argument list. This can be worked around by wrapping the
-//   outer macro call in KJ_EXPAND(), which appraently forces __VA_ARGS__ to be expanded before
+//   outer macro call in KJ_EXPAND(), which apparently forces __VA_ARGS__ to be expanded before
 //   the macro is evaluated. I don't understand the C preprocessor.
 // - Using "#__VA_ARGS__" to stringify __VA_ARGS__ expands to zero tokens when __VA_ARGS__ is
 //   empty, rather than expanding to an empty string literal. We can work around by concatenating