patch 8.2.4953: with 'si' inserting '}' after completion goes wrong

Problem:    With 'smartindent' inserting '}' after completion goes wrong.
Solution:   Check the cursor is in indent.  (closes #10420)
diff --git a/src/indent.c b/src/indent.c
index dfc481a..486259e 100644
--- a/src/indent.c
+++ b/src/indent.c
@@ -1197,7 +1197,8 @@
     int		temp;
 
     // do some very smart indenting when entering '{' or '}'
-    if (((did_si || can_si_back) && c == '{') || (can_si && c == '}'))
+    if (((did_si || can_si_back) && c == '{')
+	    || (can_si && c == '}' && inindent(0)))
     {
 	// for '}' set indent equal to indent of line containing matching '{'
 	if (c == '}' && (pos = findmatch(NULL, '{')) != NULL)