Patch by Robert Scheck <robert@fedoraproject.org> for adplug >= 2.2.1, which
works around undefined reference linking error when using GCC >= 9.1 (while
it works with GCC 9.0.x and older):

/usr/bin/ld: ../src/.libs/libadplug.so: undefined reference to `OPL_CALC_RH'

--- adplug-2.2.1/src/fmopl.c		2003-11-03 16:41:33.000000000 +0100
+++ adplug-2.2.1/src/fmopl.c.inline	2019-07-31 19:57:40.925132660 +0200
@@ -31,7 +31,7 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
-#define INLINE		__inline
+#define INLINE
 #define HAS_YM3812	1
 
 #include <stdio.h>