Updated case of winsock header files

- Address SonarCloud cpp:S3806 issues ("#include" paths should be portable)
- This is not an actual issue in this case, because WinSock2.h and
WS2tcpip.h are Windows only.

src/operators/rbl.cc

@@ -22,8 +22,8 @@
 #include <netinet/in.h>
 #include <arpa/inet.h>
 #else
-#include <winsock2.h>
-#include <ws2tcpip.h>
+#include <WinSock2.h>
+#include <WS2tcpip.h>
 #endif
 
 #include <string>

src/operators/rbl.h

@@ -23,7 +23,7 @@
 #include <netinet/in.h>
 #include <arpa/inet.h>
 #else
-#include <winsock2.h>
+#include <WinSock2.h>
 #endif
 
 #include <string>

src/unique_id.cc

@@ -18,7 +18,7 @@
 
 #ifdef WIN32
 #include "src/compat/msvc.h"
-#include <winsock2.h>
+#include <WinSock2.h>
 #include <iphlpapi.h>
 #endif
 

src/utils/geo_lookup.cc

@@ -18,7 +18,7 @@
 #include <netinet/in.h>
 #include <arpa/inet.h>
 #else
-#include <winsock2.h>
+#include <WinSock2.h>
 #endif
 #include <string>
 

src/utils/https_client.cc

@@ -26,7 +26,7 @@
 #include <netinet/in.h>
 #include <arpa/inet.h>
 #else
-#include <winsock2.h>
+#include <WinSock2.h>
 #endif
 #include <string>
 

src/utils/ip_tree.cc

@@ -21,7 +21,7 @@
 #include <netinet/in.h>
 #include <arpa/inet.h>
 #else
-#include <winsock2.h>
+#include <WinSock2.h>
 #endif
 #include <string>
 

src/utils/msc_tree.cc

@@ -21,8 +21,8 @@
 #include <arpa/inet.h>
 #else
 #include "src/compat/msvc.h"
-#include <winsock2.h>
-#include <ws2tcpip.h>
+#include <WinSock2.h>
+#include <WS2tcpip.h>
 #endif
 
 #include "src/utils/msc_tree.h"