build: use #ifdef for ENABLE_NLS check.

config.h will have either define ENABLE_NLS or not define it. If it is
not defined we get a -Wundef warning due to using #if with an
undefined macro

1 files changed, 1 insertions, 1 deletions

diff --git a/src/main.c b/src/main.c
index bf8c44d..65285a0 100644
--- a/src/main.c
+++ b/src/main.c
@@ -197,7 +197,7 @@ int flex_main (int argc, char *argv[])
 /* Wrapper around flex_main, so flex_main can be built as a library. */
 int main (int argc, char *argv[])
 {
-#if ENABLE_NLS
+#ifdef ENABLE_NLS
 #if HAVE_LOCALE_H
 	setlocale (LC_MESSAGES, "");
         setlocale (LC_CTYPE, "");