patch 8.1.1383: warning for size_t/int mixup

Problem:    Warning for size_t/int mixup.
Solution:   Change type. (Mike Williams)

src/search.c

@@ -1382,7 +1382,7 @@ do_search(
 	{
 	    char_u	*trunc;
 	    char_u	off_buf[40];
-	    int		off_len = 0;
+	    size_t	off_len = 0;
 
 	    // Compute msg_row early.
 	    msg_start();

src/version.c

@@ -767,6 +767,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1383,
 /**/
     1382,
 /**/