Thrift: Add "#include <cstdlib>" in a few places and s/malloc/std::malloc/

Summary:
There were a few places where we were calling malloc/reallaoc/free without
including cstdlib (or stdlib.h).  This is broken, but it worked because
other headers that we were including included stdlib.h.  However, on a
platform where this wasn't true, it broke the Thrift build.  This change
adds the proper includes.  It also changes malloc to std::malloc (same
with realloc and free) in a few places, because that is the correct way
of doing it when you include cstdlib.

Reviewed By: mcslee

Test Plan: Compiled Thrift.

Revert Plan: ok

Other Notes:
This bug was noticed by a Thrudb user, and the patch was sent in by
Ross McFarland.


git-svn-id: https://svn.apache.org/repos/asf/incubator/thrift/trunk@665487 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/lib/cpp/src/server/TNonblockingServer.h b/lib/cpp/src/server/TNonblockingServer.h
index e043b54..89c69a0 100644
--- a/lib/cpp/src/server/TNonblockingServer.h
+++ b/lib/cpp/src/server/TNonblockingServer.h
@@ -12,6 +12,7 @@
 #include <transport/TTransportUtils.h>
 #include <concurrency/ThreadManager.h>
 #include <stack>
+#include <cstdlib>
 #include <event.h>
 
 namespace facebook { namespace thrift { namespace server {
@@ -288,7 +289,7 @@
 
   // Constructor
   TConnection(int socket, short eventFlags, TNonblockingServer *s) {
-    readBuffer_ = (uint8_t*)malloc(1024);
+    readBuffer_ = (uint8_t*)std::malloc(1024);
     if (readBuffer_ == NULL) {
       throw new facebook::thrift::TException("Out of memory.");
     }