Fix header issue with ImageMagick7

src/bulfius_get_frame.c

@@ -17,7 +17,11 @@
  *  along with lebiniou. If not, see <http://www.gnu.org/licenses/>.
  */
 
+#ifdef MAGICKWAND7
+#include <Wand/MagickWand.h>
+#else
 #include <wand/magick_wand.h>
+#endif
 #include "bulfius.h"
 #include "context.h"
 

src/bulfius_preview.c

@@ -17,7 +17,11 @@
  *  along with lebiniou. If not, see <http://www.gnu.org/licenses/>.
  */
 
+#ifdef MAGICKWAND7
+#include <Wand/MagickWand.h>
+#else
 #include <wand/magick_wand.h>
+#endif
 #include "bulfius.h"
 #include "context.h"
 

src/screenshot.c

@@ -17,7 +17,11 @@
  *  along with lebiniou. If not, see <http://www.gnu.org/licenses/>.
  */
 
+#ifdef MAGICKWAND7
+#include <Wand/MagickWand.h>
+#else
 #include <wand/magick_wand.h>
+#endif
 #include "context.h"
 
 #define DIRECTORY      "/screenshots/"