vi: small code shrink

function                                             old     new   delta
vi_word_motion                                       185     165     -20

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/libbb/lineedit.c b/libbb/lineedit.c
index ab32972..6e836d8 100644
--- a/libbb/lineedit.c
+++ b/libbb/lineedit.c
@@ -1296,8 +1296,10 @@
 
 	if (BB_isalnum(command[cursor]) || command[cursor] == '_') {
 		while (cursor < command_len
-		 && (BB_isalnum(command[cursor+1]) || command[cursor+1] == '_'))
+		 && (BB_isalnum(command[cursor+1]) || command[cursor+1] == '_')
+		) {
 			input_forward();
+		}
 	} else if (BB_ispunct(command[cursor])) {
 		while (cursor < command_len && BB_ispunct(command[cursor+1]))
 			input_forward();
@@ -1306,9 +1308,10 @@
 	if (cursor < command_len)
 		input_forward();
 
-	if (eat && cursor < command_len && BB_isspace(command[cursor]))
+	if (eat) {
 		while (cursor < command_len && BB_isspace(command[cursor]))
 			input_forward();
+	}
 }
 
 static void
@@ -1592,7 +1595,7 @@
 
 /* leave out the "vi-mode"-only case labels if vi editing isn't
  * configured. */
-#define vi_case(caselabel) IF_FEATURE_EDITING(case caselabel)
+#define vi_case(caselabel) IF_FEATURE_EDITING_VI(case caselabel)
 
 /* convert uppercase ascii to equivalent control char, for readability */
 #undef CTRL