patch 8.2.2379: do spell suggestions twice if 'spellsuggest' contains number

Problem:    Finding spell suggestions twice if 'spellsuggest' contains number.
Solution:   Only do internal suggestions once.  (closes #7713)

src/spellsuggest.c

@@ -770,6 +770,7 @@ spell_find_suggest(
     int		c;
     int		i;
     langp_T	*lp;
+    int		did_intern = FALSE;
 
     // Set the info in "*su".
     CLEAR_POINTER(su);
@@ -863,12 +864,13 @@ spell_find_suggest(
 	else if (STRNCMP(buf, "file:", 5) == 0)
 	    // Use list of suggestions in a file.
 	    spell_suggest_file(su, buf + 5);
-	else
+	else if (!did_intern)
 	{
-	    // Use internal method.
+	    // Use internal method once.
 	    spell_suggest_intern(su, interactive);
 	    if (sps_flags & SPS_DOUBLE)
 		do_combine = TRUE;
+	    did_intern = TRUE;
 	}
     }
 

src/version.c

@@ -750,6 +750,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2379,
 /**/
     2378,
 /**/