[PATCH] build: Fix build with gettext 0.20.1

[Eric Blake]

While the gnulib libtextstyle replacement compiled fine, Fedora 31's
libtextstyle-devel from gettext 0.20.1 lacks the hyperlink support
added upstream in gettext 0.21, causing:

pk-term.c: In function 'pk_term_init':
pk-term.c:75:21: error: lvalue required as left operand of assignment
    75 |     style_file_name = NULL;

* src/pk-term.c (pk_term_init): Use correct conditional.
---
 ChangeLog     | 4 ++++
 src/pk-term.c | 2 +-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/ChangeLog b/ChangeLog
index 65c6ee57..0257edd4 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2020-02-24  Eric Blake  <address@hidden>
+
+       * src/pk-term.c (pk_term_init): Use correct conditional.
+
 2020-02-24  Eric Blake  <address@hidden>

        maint: add run script for easier uninstalled usage
diff --git a/src/pk-term.c b/src/pk-term.c
index adf6c66d..833f77f0 100644
--- a/src/pk-term.c
+++ b/src/pk-term.c
@@ -58,7 +58,7 @@ pk_term_init (int argc, char *argv[])
      because the textstyle.h file provided by the gnulib module
      libtextstyle-optional defines style_file_name as an r-value.  */

-#ifdef HAVE_LIBTEXTSTYLE
+#ifdef HAVE_TEXTSTYLE_HYPERLINK_SUPPORT
   /* Open the specified style.  */
   if (color_mode == color_yes
       || (color_mode == color_tty
-- 
2.24.1