do not implement get_user_input() in DISABLE_NCURSES builds

Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky(a)gmail.com>

---

 src/lib.cpp | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/lib.cpp b/src/lib.cpp
index 77e49a2..ddb0b5c 100644
--- a/src/lib.cpp
+++ b/src/lib.cpp
@@ -436,12 +436,16 @@ void process_directory(const char *d_name, callback fn)
 
 int get_user_input(char *buf, unsigned sz)
 {
+	int ret = 0;
+#ifndef DISABLE_NCURSES
 	fflush(stdout);
 	echo();
 	/* Upon successful completion, these functions return OK. Otherwise, they return ERR. */
-	int ret = getnstr(buf, sz);
+	ret = getnstr(buf, sz);
 	noecho();
 	fflush(stdout);
 	/* to distinguish between getnstr error and empty line */
-	return ret || strlen(buf);
+	ret |= strlen(buf);
+#endif
+	return ret;
 }