global initialization for libmagic

Add a global `magic_t magic` and initialize it just once.

Also `feh_is_image()` now calls itself to check compressed files, saving
some duplicate code.

1 files changed, 8 insertions, 0 deletions

diff --git a/src/main.c b/src/main.c
index 3d124fd..34b667a 100644
--- a/src/main.c
+++ b/src/main.c
@@ -69,6 +69,10 @@ int main(int argc, char **argv)
 #endif
 	}
 
+#ifdef HAVE_LIBMAGIC
+	init_magic();
+#endif
+
 	feh_event_init();
 
 	if (opt.index)
@@ -262,6 +266,10 @@ void feh_clean_exit(void)
 	if(disp)
 		XCloseDisplay(disp);
 
+#ifdef HAVE_LIBMAGIC
+	uninit_magic();
+#endif
+
 	/*
 	 * Only restore the old terminal settings if
 	 * - we changed them in the first place