ext: Include winsock.h on Windows when required

https://bugzilla.gnome.org/show_bug.cgi?id=733052

ext/curl/gstcurlsftpsink.c

@@ -48,12 +48,16 @@
 #include <string.h>
 #include <stdio.h>
 
+#ifdef _WIN32
+#include <winsock.h>
+#else
 #include <sys/socket.h>
-#include <sys/types.h>
 #include <netinet/in.h>
-#include <unistd.h>
 #include <netinet/ip.h>
 #include <netinet/tcp.h>
+#endif
+#include <sys/types.h>
+#include <unistd.h>
 #include <sys/stat.h>
 #include <fcntl.h>
 

ext/curl/gstcurlsshsink.c

@@ -34,12 +34,16 @@
 #include <string.h>
 #include <stdio.h>
 
+#ifdef _WIN32
+#include <winsock.h>
+#else
 #include <sys/socket.h>
-#include <sys/types.h>
 #include <netinet/in.h>
-#include <unistd.h>
 #include <netinet/ip.h>
 #include <netinet/tcp.h>
+#endif
+#include <sys/types.h>
+#include <unistd.h>
 #include <sys/stat.h>
 #include <fcntl.h>
 

ext/opencv/MotionCells.cpp

@@ -53,7 +53,12 @@
 #include <errno.h>
 #include <math.h>
 #include <gst/gst.h>
-#include <arpa/inet.h>
+#ifdef _WIN32
+  #include <winsock.h>
+  #define bzero(p, l) memset(p, 0, l)
+#else
+  #include <arpa/inet.h>
+#endif
 #include "MotionCells.h"
 
 uint64_t ntohl64 (uint64_t val);