Fix compilation errors for x86-64 SDK

Change-Id: Ia515f3bb6687a1bfc1c37fb33e37602ab9d91950
Signed-off-by: Tom Joseph <tomjoseph@in.ibm.com>
diff --git a/socket_channel.cpp b/socket_channel.cpp
index a29ef8d..fa5c882 100644
--- a/socket_channel.cpp
+++ b/socket_channel.cpp
@@ -37,7 +37,7 @@
     auto bufferSize = outBuffer.size();
     auto outputPtr = outBuffer.data();
 
-    address.addrSize = sizeof(address.inAddr);
+    address.addrSize = static_cast<socklen_t>(sizeof(address.inAddr));
 
     do
     {
@@ -98,7 +98,8 @@
         {
             if (FD_ISSET(sockfd, &writeSet))
             {
-                address.addrSize = sizeof(address.inAddr);
+                address.addrSize =
+                        static_cast<socklen_t>(sizeof(address.inAddr));
                 do
                 {
                     writeDataLen = sendto(sockfd,           // File Descriptor