Fix link error on Windows.

error LNK2001: unresolved external symbol _debug_sync_C_callback_ptr

storage/innodb_plugin/row/row0ins.c

@@ -23,9 +23,15 @@ Insert into a table
 Created 4/20/1996 Heikki Tuuri
 *******************************************************/
 
-#include "my_global.h" /* HAVE_* */
-#include "m_string.h" /* for my_sys.h */
-#include "my_sys.h" /* DEBUG_SYNC_C */
+#ifdef __WIN__
+/* error LNK2001: unresolved external symbol _debug_sync_C_callback_ptr */
+# define DEBUG_SYNC_C(dummy) ((void) 0)
+#else
+# include "my_global.h" /* HAVE_* */
+# include "m_string.h" /* for my_sys.h */
+# include "my_sys.h" /* DEBUG_SYNC_C */
+#endif
+
 #include "row0ins.h"
 
 #ifdef UNIV_NONINL

storage/innodb_plugin/row/row0upd.c

@@ -23,9 +23,15 @@ Update of a row
 Created 12/27/1996 Heikki Tuuri
 *******************************************************/
 
-#include "my_global.h" /* HAVE_* */
-#include "m_string.h" /* for my_sys.h */
-#include "my_sys.h" /* DEBUG_SYNC_C */
+#ifdef __WIN__
+/* error LNK2001: unresolved external symbol _debug_sync_C_callback_ptr */
+# define DEBUG_SYNC_C(dummy) ((void) 0)
+#else
+# include "my_global.h" /* HAVE_* */
+# include "m_string.h" /* for my_sys.h */
+# include "my_sys.h" /* DEBUG_SYNC_C */
+#endif
+
 #include "row0upd.h"
 
 #ifdef UNIV_NONINL