Fix disassembly redirection from stdout into a file.

src/ostreams.cc

Index: src/ostreams.cc
diff --git a/src/ostreams.cc b/src/ostreams.cc
index 0f5bec41d2b8b2a48685ddf7425ab6ceeb884df0..847dc31bad6630227c227d2fddd08e305009ee79 100644
--- a/src/ostreams.cc
+++ b/src/ostreams.cc
@@ -163,6 +163,16 @@ OFStream& OFStream::flush() {
 }
 
 
+OStream& operator<<(OStream& os, const AsReversiblyEscapedUC16& c) {
+  char buf[10];
+  const char* format = (0x20 <= c.value && c.value <= 0x7F) && (c.value != 0x52)
+                           ? "%c"
+                           : (c.value <= 0xff) ? "\\x%02x" : "\\u%04x";
+  snprintf(buf, sizeof(buf), format, c.value);
+  return os << buf;
+}
+
+
 OStream& operator<<(OStream& os, const AsUC16& c) {
   char buf[10];
   const char* format = (0x20 <= c.value && c.value <= 0x7F)