patch 8.1.1086: too many curly braces

Problem:    Too many curly braces.
Solution:   Remove curly braces where they are not needed. (Hirohito Higashi,
            closes #3982)
diff --git a/src/getchar.c b/src/getchar.c
index 0e9942b..e8926d4 100644
--- a/src/getchar.c
+++ b/src/getchar.c
@@ -1813,9 +1813,8 @@
     int c;
 
     do
-    {
 	c = safe_vgetc();
-    } while (c == K_IGNORE || c == K_VER_SCROLLBAR || c == K_HOR_SCROLLBAR);
+    while (c == K_IGNORE || c == K_VER_SCROLLBAR || c == K_HOR_SCROLLBAR);
 
     if (c == K_PS)
 	/* Only handle the first pasted character.  Drop the rest, since we