package/poppler: fix libcurl support

BR2_PACKAGE_POPPLER_LIBCURL is not defined in poppler/Config.in.

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Acked-by: Olivier Schonken <olivier.schonken@gmail.com>
Signed-off-by: Bernd Kuhls &lt;<a href="mailto:bernd.kuhls@t-online.de">bernd.kuhls@t-online.de</a>&gt;<br>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
(cherry picked from commit ec574bb3e99d3d6eb82c8224402b8ad72c0d4fe2)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/poppler/poppler.mk

@@ -66,7 +66,7 @@ else
 POPPLER_CONF_OPTS += --disable-zlib
 endif
 
-ifeq ($(BR2_PACKAGE_POPPLER_LIBCURL),y)
+ifeq ($(BR2_PACKAGE_LIBCURL),y)
 POPPLER_CONF_OPTS += --enable-libcurl
 POPPLER_DEPENDENCIES += libcurl
 else