Subzero: Fix a warning message in the browser build.

src/IceBrowserCompileServer.cpp

 //===- subzero/src/IceBrowserCompileServer.cpp - Browser compile server ---===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 ///
 /// \file
@@ skipping 259 matching lines @@
   }
   return LastError;
 }
 
 void BrowserCompileServer::endInputStream() { InputStream->SetDone(); }
 
 void BrowserCompileServer::startCompileThread(int ObjFD) {
   InputStream = new llvm::QueueStreamer();
   bool LogStreamFailure = false;
   int LogFD = STDOUT_FILENO;
-  if (getFlags().getLogFilename() == "/dev/stderr") {
+  if (getFlags().getLogFilename() == "-") {
+    // Common case, do nothing.
+  } else if (getFlags().getLogFilename() == "/dev/stderr") {
     LogFD = STDERR_FILENO;
   } else {
     LogStreamFailure = true;
   }
   LogStream = getOutputStream(LogFD);
   LogStream->SetUnbuffered();
   if (LogStreamFailure) {
     *LogStream
         << "Warning: Log file name must be either '-' or '/dev/stderr'\n";
   }
@@ skipping 28 matching lines @@
   llvm::report_fatal_error("no browser hookups");
 }
 
 ErrorCode &BrowserCompileServer::getErrorCode() {
   llvm::report_fatal_error("no browser hookups");
 }
 
 } // end of namespace Ice
 
 #endif // PNACL_BROWSER_TRANSLATOR