THRIFT-5766 Replace std::endl with "\n"
Patch: Carel Combrink

This closes #2943
diff --git a/lib/cpp/test/Benchmark.cpp b/lib/cpp/test/Benchmark.cpp
index 97a5317..ba8c345 100644
--- a/lib/cpp/test/Benchmark.cpp
+++ b/lib/cpp/test/Benchmark.cpp
@@ -53,7 +53,6 @@
   using namespace apache::thrift::transport;
   using namespace apache::thrift::protocol;
   using std::cout;
-  using std::endl;
 
   OneOfEach ooe;
   ooe.im_true = true;
@@ -84,7 +83,7 @@
       ooe.write(&prot);
     }
     elapsed = timer.frame();
-    cout << "Write big endian: " << num / (1000 * elapsed) << " kHz" << endl;
+    cout << "Write big endian: " << num / (1000 * elapsed) << " kHz" << '\n';
   }
 
   buf->getBuffer(&data, &datasize);
@@ -100,7 +99,7 @@
       ooe2.read(&prot);
     }
     elapsed = timer.frame();
-    cout << " Read big endian: " << num / (1000 * elapsed) << " kHz" << endl;
+    cout << " Read big endian: " << num / (1000 * elapsed) << " kHz" << '\n';
   }
 
   {
@@ -113,7 +112,7 @@
       ooe.write(&prot);
     }
     elapsed = timer.frame();
-    cout << "Write little endian: " << num / (1000 * elapsed) << " kHz" << endl;
+    cout << "Write little endian: " << num / (1000 * elapsed) << " kHz" << '\n';
   }
 
   {
@@ -127,7 +126,7 @@
       ooe2.read(&prot);
     }
     elapsed = timer.frame();
-    cout << " Read little endian: " << num / (1000 * elapsed) << " kHz" << endl;
+    cout << " Read little endian: " << num / (1000 * elapsed) << " kHz" << '\n';
   }
 
   {
@@ -140,7 +139,7 @@
       ooe.write(&prot);
     }
     elapsed = timer.frame();
-    cout << "Write big endian: " << num / (1000 * elapsed) << " kHz" << endl;
+    cout << "Write big endian: " << num / (1000 * elapsed) << " kHz" << '\n';
   }
 
   {
@@ -154,7 +153,7 @@
       ooe2.read(&prot);
     }
     elapsed = timer.frame();
-    cout << " Read big endian: " << num / (1000 * elapsed) << " kHz" << endl;
+    cout << " Read big endian: " << num / (1000 * elapsed) << " kHz" << '\n';
   }
 
 
@@ -177,7 +176,7 @@
 
     listDoublePerf.write(&prot);
     elapsed = timer.frame();
-    cout << "Double write big endian: " << num / (1000 * elapsed) << " kHz" << endl;
+    cout << "Double write big endian: " << num / (1000 * elapsed) << " kHz" << '\n';
   }
 
   buf->getBuffer(&data, &datasize);
@@ -191,7 +190,7 @@
 
     listDoublePerf2.read(&prot);
     elapsed = timer.frame();
-    cout << " Double read big endian: " << num / (1000 * elapsed) << " kHz" << endl;
+    cout << " Double read big endian: " << num / (1000 * elapsed) << " kHz" << '\n';
   }
 
   {
@@ -202,7 +201,7 @@
 
     listDoublePerf.write(&prot);
     elapsed = timer.frame();
-    cout << "Double write little endian: " << num / (1000 * elapsed) << " kHz" << endl;
+    cout << "Double write little endian: " << num / (1000 * elapsed) << " kHz" << '\n';
   }
 
   {
@@ -214,7 +213,7 @@
 
     listDoublePerf2.read(&prot);
     elapsed = timer.frame();
-    cout << " Double read little endian: " << num / (1000 * elapsed) << " kHz" << endl;
+    cout << " Double read little endian: " << num / (1000 * elapsed) << " kHz" << '\n';
   }
 
   {
@@ -225,7 +224,7 @@
 
     listDoublePerf.write(&prot);
     elapsed = timer.frame();
-    cout << "Double write big endian: " << num / (1000 * elapsed) << " kHz" << endl;
+    cout << "Double write big endian: " << num / (1000 * elapsed) << " kHz" << '\n';
   }
 
   {
@@ -237,7 +236,7 @@
 
     listDoublePerf2.read(&prot);
     elapsed = timer.frame();
-    cout << " Double read big endian: " << num / (1000 * elapsed) << " kHz" << endl;
+    cout << " Double read big endian: " << num / (1000 * elapsed) << " kHz" << '\n';
   }