patch 9.0.0102: reading past end of line with insert mode completion

Problem:    Reading past end of line with insert mode completion.
Solution:   Check text length.

src/insexpand.c

@@ -3501,7 +3501,7 @@ ins_comp_get_next_word_or_line(
     {
 	char_u	*tmp_ptr = ptr;
 
-	if (compl_status_adding())
+	if (compl_status_adding() && compl_length <= (int)STRLEN(tmp_ptr))
 	{
 	    tmp_ptr += compl_length;
 	    // Skip if already inside a word.

src/testdir/test_ins_complete.vim

@@ -2142,5 +2142,13 @@ func Test_ins_complete_add()
   bwipe!
 endfunc
 
+func Test_ins_complete_end_of_line()
+  " this was reading past the end of the line
+  new  
+  norm 8o€ý 
+  sil! norm o
+
+  bwipe!
+endfunc
 
 " vim: shiftwidth=2 sts=2 expandtab

src/version.c

@@ -735,6 +735,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    102,
 /**/
     101,
 /**/