patch 9.0.1718: dict-completion does not respect region

Problem: dict-completion does not respect region
Solution: respect selected region in dict completion

Set do_region to zero as we don't want a complete dump of the matching
words, we want the code to filter them according to the user's selected
region.

closes: #12792
closes: #7025

Signed-off-by: Christian Brabandt <cb@256bit.org>
Co-authored-by: LemonBoy <thatlemon@gmail.com>

src/spell.c

@@ -3942,14 +3942,11 @@ spell_dump_compl(
 	}
     }
 
-    if (do_region && region_names != NULL)
-    {
-	if (pat == NULL)
+    if (do_region && region_names != NULL && pat == NULL)
     {
 	vim_snprintf((char *)IObuff, IOSIZE, "/regions=%s", region_names);
 	ml_append(lnum++, IObuff, (colnr_T)0, FALSE);
     }
-    }
     else
 	do_region = FALSE;
 

src/testdir/test_spell.vim

@@ -274,8 +274,7 @@ func Test_compl_with_CTRL_X_CTRL_K_using_spell()
   call assert_equal(['theater'], getline(1, '$'))
   set spelllang=en_gb
   call feedkeys("Stheat\<c-x>\<c-k>\<esc>", 'tnx')
-  " FIXME: commented out, expected theatre bug got theater. See issue #7025.
-  " call assert_equal(['theatre'], getline(1, '$'))
+  call assert_equal(['theatre'], getline(1, '$'))
 
   bwipe!
   set spell& spelllang& dictionary& ignorecase&

src/version.c

@@ -695,6 +695,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1718,
 /**/
     1717,
 /**/