Replace call to strnlen with call to strlen

src/win32/posix_w32.c

@@ -12,7 +12,6 @@
 #include <io.h>
 #include <fcntl.h>
 #include <ws2tcpip.h>
-#include <string.h>
 
 int p_unlink(const char *path)
 {
@@ -114,7 +113,7 @@ static int do_lstat(
 			if (readlink_result == -1)
 				return -1;
 
-			buf->st_size = strnlen(target, GIT_WIN_PATH);
+			buf->st_size = strlen(target);
 		}
 
 		return 0;