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/ex_getln.c b/src/ex_getln.c
index 3d38d2c..52eda33 100644
--- a/src/ex_getln.c
+++ b/src/ex_getln.c
@@ -1029,9 +1029,8 @@
 	/* Get a character.  Ignore K_IGNORE and K_NOP, they should not do
 	 * anything, such as stop completion. */
 	do
-	{
 	    c = safe_vgetc();
-	} while (c == K_IGNORE || c == K_NOP);
+	while (c == K_IGNORE || c == K_NOP);
 
 	if (KeyTyped)
 	{
@@ -2833,9 +2832,8 @@
 		    if (*p == TAB)
 		    {
 			do
-			{
 			    msg_putchar(' ');
-			} while (++vcol % 8);
+			while (++vcol % 8);
 			++p;
 		    }
 		    else
@@ -2908,9 +2906,8 @@
 	{
 	    /* Don't use chartabsize(), 'ts' can be different */
 	    do
-	    {
 		msg_putchar(' ');
-	    } while (++vcol % 8);
+	    while (++vcol % 8);
 	}
 	else
 	{